CVE-2026-57432

HIGHNVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

Score 8.4 from GitHub Security Advisory (severity: HIGH) published 2026-07-13. NVD baseline CVSS 8.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: None knownExposed: 0

A fix is available — apply it.

Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.11 have an integer overflow in S_measure_struct leading to an out-of-bounds heap read in pack and unpack.

S_measure_struct adds each item's size times its repeat count to a running total with no overflow check, so a large repeat count in a pack or unpack template wraps the signed SSize_t total negative. The @, X, and x position codes then guard their moves with a signed length comparison that passes when the length is negative, advancing the buffer pointer out of bounds.

A template derived from untrusted input can read heap memory past the buffer and return it to the caller.

CVSS v3
8.4
EG Score
8.4(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity84% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

July 13, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Jul 14, 2026
No patch confirmed yet.
generic
https://github.com/Perl/perl5/commit/40754edc72dd3e513d758153c0e2f0215897740e.patch
generic
https://github.com/Perl/perl5/commit/5f7eb6bbbe0510964e3fb1d6bb691e5445913e55.patch

Vendor Advisories for CVE-2026-57432(3)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuperl-modules-5.38 (5.38.2-3.2ubuntu0.4) @ noble2026-09-18ubuntu
ubuntuperl-modules-5.40 (5.40.1-7ubuntu0.3) @ resolute2026-09-18ubuntu
ubuntuperl-modules-5.34 (5.34.0-3ubuntu1.8) @ jammy2026-09-18ubuntu
redhatperl-main-1.03-524.3.hum12026-07-15redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
perl5.32.1-4 ... 5.44.0-1 (59 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
perl5.36.0-10 ... 5.44.0-1 (43 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
perl5.40.1-6 ... 5.44.0-1 (11 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
perl5.40.1-6, 5.40.1-75.40.1-8—

Weakness Classification(2)

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 14× in last 7d / 84× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 266 total refreshes for this CVE.

  1. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 05:02 UTCEG score recompute
  4. 2026-09-18 05:02 UTCVendor advisory
  5. 2026-09-18 05:02 UTCGHSA enrichment
  6. 2026-09-17 19:31 UTCEPSS rescore
  7. 2026-09-16 14:08 UTCEPSS rescore
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-15 03:11 UTCEPSS rescore
  10. 2026-09-14 11:37 UTCVendor advisory
  11. 2026-09-14 11:37 UTCGHSA enrichment
  12. 2026-09-13 23:32 UTCEG score recompute
  13. 2026-09-13 23:32 UTCVendor advisory
  14. 2026-09-13 23:32 UTCGHSA enrichment
  15. 2026-09-13 16:47 UTCEPSS rescore
  16. 2026-09-13 08:00 UTCEG score recompute
  17. 2026-09-13 08:00 UTCVendor advisory
  18. 2026-09-13 08:00 UTCGHSA enrichment
  19. 2026-09-12 13:46 UTCVendor advisory
  20. 2026-09-12 13:46 UTCGHSA enrichment
  21. 2026-09-12 01:51 UTCEG score recompute
  22. 2026-09-12 01:51 UTCVendor advisory
  23. 2026-09-12 01:51 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-10 09:35 UTCEPSS rescore
Show 75 more
  1. 2026-09-08 22:53 UTCEG score recompute
  2. 2026-09-08 22:53 UTCVendor advisory
  3. 2026-09-08 22:53 UTCGHSA enrichment
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-08 01:57 UTCEG score recompute
  6. 2026-09-08 01:57 UTCVendor advisory
  7. 2026-09-08 01:57 UTCGHSA enrichment
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 13:50 UTCEG score recompute
  10. 2026-09-06 13:50 UTCVendor advisory
  11. 2026-09-06 13:50 UTCGHSA enrichment
  12. 2026-09-06 13:47 UTCEPSS rescore
  13. 2026-09-05 21:25 UTCEG score recompute
  14. 2026-09-05 21:25 UTCVendor advisory
  15. 2026-09-05 21:25 UTCGHSA enrichment
  16. 2026-09-04 05:07 UTCEPSS rescore
  17. 2026-09-02 14:12 UTCEPSS rescore
  18. 2026-09-01 13:54 UTCEPSS rescore
  19. 2026-08-30 19:17 UTCEPSS rescore
  20. 2026-08-30 17:24 UTCVendor advisory
  21. 2026-08-30 17:24 UTCGHSA enrichment
  22. 2026-08-30 05:29 UTCEG score recompute
  23. 2026-08-30 05:29 UTCVendor advisory
  24. 2026-08-30 05:29 UTCGHSA enrichment
  25. 2026-08-30 01:22 UTCEPSS rescore
  26. 2026-08-28 21:42 UTCEPSS rescore
  27. 2026-08-27 21:36 UTCEG score recompute
  28. 2026-08-27 21:36 UTCVendor advisory
  29. 2026-08-27 21:36 UTCGHSA enrichment
  30. 2026-08-27 14:25 UTCEPSS rescore
  31. 2026-08-27 02:22 UTCEG score recompute
  32. 2026-08-27 02:22 UTCVendor advisory
  33. 2026-08-27 02:22 UTCGHSA enrichment
  34. 2026-08-26 14:46 UTCEPSS rescore
  35. 2026-08-26 14:28 UTCVendor advisory
  36. 2026-08-26 14:28 UTCGHSA enrichment
  37. 2026-08-26 02:23 UTCEG score recompute
  38. 2026-08-26 02:23 UTCVendor advisory
  39. 2026-08-26 02:23 UTCGHSA enrichment
  40. 2026-08-25 13:49 UTCEPSS rescore
  41. 2026-08-25 07:52 UTCVendor advisory
  42. 2026-08-25 07:52 UTCGHSA enrichment
  43. 2026-08-24 19:58 UTCEG score recompute
  44. 2026-08-24 19:58 UTCVendor advisory
  45. 2026-08-24 19:58 UTCGHSA enrichment
  46. 2026-08-24 03:49 UTCVendor advisory
  47. 2026-08-24 03:49 UTCGHSA enrichment
  48. 2026-08-23 14:30 UTCVendor advisory
  49. 2026-08-23 14:30 UTCGHSA enrichment
  50. 2026-08-23 02:36 UTCEG score recompute
  51. 2026-08-23 02:36 UTCVendor advisory
  52. 2026-08-23 02:36 UTCGHSA enrichment
  53. 2026-08-23 00:19 UTCEPSS rescore
  54. 2026-08-22 14:41 UTCVendor advisory
  55. 2026-08-22 14:41 UTCGHSA enrichment
  56. 2026-08-22 02:34 UTCEG score recompute
  57. 2026-08-22 02:34 UTCVendor advisory
  58. 2026-08-22 02:34 UTCGHSA enrichment
  59. 2026-08-21 23:49 UTCEPSS rescore
  60. 2026-08-21 14:32 UTCVendor advisory
  61. 2026-08-21 14:32 UTCGHSA enrichment
  62. 2026-08-21 02:37 UTCEG score recompute
  63. 2026-08-21 02:37 UTCVendor advisory
  64. 2026-08-21 02:37 UTCGHSA enrichment
  65. 2026-08-20 22:55 UTCEPSS rescore
  66. 2026-08-20 14:41 UTCVendor advisory
  67. 2026-08-20 14:41 UTCGHSA enrichment
  68. 2026-08-20 01:13 UTCEG score recompute
  69. 2026-08-20 01:13 UTCVendor advisory
  70. 2026-08-20 01:13 UTCGHSA enrichment
  71. 2026-08-19 17:04 UTCEPSS rescore
  72. 2026-08-19 08:22 UTCVendor advisory
  73. 2026-08-19 08:22 UTCGHSA enrichment
  74. 2026-08-18 20:27 UTCEG score recompute
  75. 2026-08-18 20:27 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-57432?
CVE-2026-57432 is a high vulnerability published on July 13, 2026. Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.11 have an integer overflow in Smeasurestruct leading to an out-of-bounds heap read in pack and unpack. Smeasurestruct adds each item's size times its repeat count to a running total with no overflow check, so a…
When was CVE-2026-57432 disclosed?
CVE-2026-57432 was first published in the National Vulnerability Database on July 13, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57432 actively exploited?
CVE-2026-57432 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 88.4% of all scored CVEs.
What is the CVSS score of CVE-2026-57432?
CVE-2026-57432 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2026-57432?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57432, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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