CVE-2026-57433

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-13. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory

Also known asEUVD-2026-43501 (ENISA EUVD) · GHSA-r969-gf4c-xqf7 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Fixed versions, as the CVE record's CNA (CPAN Security Group) states them: "Upgrade to Storable 3.41 or later."

Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record.

retrieve_hook_common reads a signed 32-bit item count from an SX_HOOK record and calls av_extend with that count plus one. A count of I32_MAX wraps the addition to a negative value.

A crafted blob passed to thaw or retrieve triggers the overflow; av_extend receives the negative count and dies with a panic, terminating the deserialization.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
45th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 13, 2026

Last Modified

November 10, 2026

Advisory Details (2)

Auto-updated Nov 9, 2026
Patch available.
Web page

oss-security - CVE-2026-57433: Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record

http://www.openwall.com/lists/oss-security/2026/07/13/7

Vendor Advisories for CVE-2026-57433(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuperl-modules-5.40 (5.40.1-7ubuntu0.3) @ resolute2026-11-12ubuntu
ubuntuperl-modules-5.38 (5.38.2-3.2ubuntu0.4) @ noble2026-11-12ubuntu
ubuntuperl-modules-5.22 (5.22.1-9ubuntu0.9+esm3) @ xenial2026-11-12ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
perl—
  • every version up to 5.42.3-r0: fixed in 5.42.3-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
perl5.32.1-4 ... 5.44.0-1 (59 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
perl5.36.0-7, 5.36.0-7+deb12u1, 5.36.0-7+deb12u2, 5.36.0-7+deb12u3
  • every version up to 5.36.0-7+deb12u4: fixed in 5.36.0-7+deb12u4
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
perl5.40.1-6
  • every version up to 5.40.1-6+deb13u1: fixed in 5.40.1-6+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
perl5.40.1-6, 5.40.1-7
  • every version up to 5.40.1-8: fixed in 5.40.1-8
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 20× in last 7d / 85× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 692 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 592 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 17:02 UTCEchelonGraph re-scored
  2. 2026-11-12 17:02 UTCVendor advisory
  3. 2026-11-12 17:02 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  5. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  6. 2026-11-11 15:14 UTCEchelonGraph re-scored
  7. 2026-11-11 15:14 UTCVendor advisory
  8. 2026-11-11 15:14 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-11-10 16:44 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  10. 2026-11-10 13:28 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-11-10 12:50 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-11-10 05:25 UTCEchelonGraph re-scored
  13. 2026-11-10 05:25 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-11-09 03:39 UTCEchelonGraph re-scored
  16. 2026-11-09 03:39 UTCVendor advisory
  17. 2026-11-09 03:39 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  18. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-11-08 01:52 UTCEchelonGraph re-scored
  20. 2026-11-08 01:52 UTCVendor advisory
  21. 2026-11-08 01:52 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  22. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  23. 2026-11-07 00:06 UTCEchelonGraph re-scored
  24. 2026-11-07 00:06 UTCVendor advisory
  25. 2026-11-07 00:06 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
Show 75 more
  1. 2026-11-06 16:38 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  2. 2026-11-06 12:55 UTCOSV refresh
  3. 2026-11-05 22:18 UTCEchelonGraph re-scored
  4. 2026-11-05 22:18 UTCVendor advisory
  5. 2026-11-05 22:18 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  6. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  7. 2026-11-04 20:26 UTCEchelonGraph re-scored
  8. 2026-11-04 20:26 UTCVendor advisory
  9. 2026-11-04 20:26 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  10. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  11. 2026-11-03 18:39 UTCEchelonGraph re-scored
  12. 2026-11-03 18:39 UTCVendor advisory
  13. 2026-11-03 18:39 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  15. 2026-11-02 16:53 UTCEchelonGraph re-scored
  16. 2026-11-02 16:53 UTCVendor advisory
  17. 2026-11-02 16:53 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  18. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  19. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-11-01 15:01 UTCEchelonGraph re-scored
  21. 2026-11-01 15:01 UTCVendor advisory
  22. 2026-11-01 15:01 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  24. 2026-10-31 13:15 UTCEchelonGraph re-scored
  25. 2026-10-31 13:15 UTCVendor advisory
  26. 2026-10-31 13:15 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  27. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  28. 2026-10-30 11:24 UTCEchelonGraph re-scored
  29. 2026-10-30 11:24 UTCVendor advisory
  30. 2026-10-30 11:24 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  31. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  32. 2026-10-29 09:38 UTCEchelonGraph re-scored
  33. 2026-10-29 09:38 UTCVendor advisory
  34. 2026-10-29 09:38 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  35. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  36. 2026-10-28 07:52 UTCEchelonGraph re-scored
  37. 2026-10-28 07:52 UTCVendor advisory
  38. 2026-10-28 07:52 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  39. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  40. 2026-10-27 06:06 UTCEchelonGraph re-scored
  41. 2026-10-27 06:06 UTCVendor advisory
  42. 2026-10-27 06:06 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  43. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  44. 2026-10-26 00:12 UTCEchelonGraph re-scored
  45. 2026-10-26 00:12 UTCVendor advisory
  46. 2026-10-26 00:12 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  47. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  48. 2026-10-25 14:17 UTCEchelonGraph re-scored
  49. 2026-10-24 22:26 UTCEchelonGraph re-scored
  50. 2026-10-24 22:26 UTCVendor advisory
  51. 2026-10-24 22:26 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  52. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  53. 2026-10-24 07:36 UTCEchelonGraph re-scored
  54. 2026-10-24 07:36 UTCVendor advisory
  55. 2026-10-24 07:36 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  56. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  57. 2026-10-23 05:49 UTCEchelonGraph re-scored
  58. 2026-10-23 05:49 UTCVendor advisory
  59. 2026-10-23 05:49 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  60. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  61. 2026-10-22 04:02 UTCEchelonGraph re-scored
  62. 2026-10-22 04:02 UTCVendor advisory
  63. 2026-10-22 04:02 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  64. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.4% · 28th percentile
  65. 2026-10-21 02:12 UTCEchelonGraph re-scored
  66. 2026-10-21 02:11 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  67. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  68. 2026-10-20 00:23 UTCEchelonGraph re-scored
  69. 2026-10-20 00:23 UTCVendor advisory
  70. 2026-10-20 00:23 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  71. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 27th percentile
  72. 2026-10-18 22:31 UTCEchelonGraph re-scored
  73. 2026-10-18 22:31 UTCVendor advisory
  74. 2026-10-18 22:31 UTCGHSA enrichmentGHSA-r969-gf4c-xqf7 · GitHub severity CRITICAL · GitHub CVSS 9.8
  75. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 27th percentile

Frequently asked(5)

What is CVE-2026-57433?
CVE-2026-57433 is a critical-severity vulnerability; its CVE record was published on July 13, 2026. Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record. retrieve_hook_common reads a signed 32-bit item count from an SX_HOOK record and calls av_extend with that count plus one. A count of I32_MAX wraps the addition to a negative value. A…
When was the CVE record for CVE-2026-57433 published?
The CVE record for CVE-2026-57433 was published on July 13, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 10, 2026; the record at its source may have been updated since.
Is CVE-2026-57433 actively exploited?
CVE-2026-57433 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-57433?
CVE-2026-57433 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-57433?
A fix for CVE-2026-57433 is available: update to the fixed version the vendor names in its advisory. Fixed versions, as the CVE record's CNA (CPAN Security Group) states them: "Upgrade to Storable 3.41 or later." The vendor advisories EchelonGraph has for CVE-2026-57433 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-57433

Explore →

Is Your Infrastructure Affected by CVE-2026-57433?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.