CVE-2026-87723

MEDIUMPre-NVD 5.45.4
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 5.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (1st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2026-88074 (ENISA EUVD) · GHSA-q4qj-wcfm-8x96 (GitHub Security Advisories)Source: ENISA EUVD

5.4EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In Google fuse-archive versions prior to 1.24, an attacker who can prepend a directory to PATH or write a malicious binary to an attacker-controlled or writable directory appearing in PATH can hijack the execution pathway. This allows the attacker to execute arbitrary local code under the security context of the user running the fuse-archive process. The issue was partially mitigated in version 1.22 and fully resolved in 1.24 via refined selective PATH filtering.

CVSS
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

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)
Severity54% × 45%
Impact severity (EG Severity): CVSS 5.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
0.1%
EPSS %ILE
1st
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 (5.4): severity, escalated by confirmed exploitation. This CVE's 5.4 is its impact severity (EG Severity), not escalated.

EG Severity
5.4 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-10). 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; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade 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; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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

September 28, 2026

Last Modified

September 29, 2026

Advisory Details (2)

Auto-updated Sep 28, 2026
Patch available. Sources: github_commit.
GitHub commit Patch Available

commit 6f086e638142 (google/fuse-archive)

Patch available: google/fuse-archive v1.24 (contains commit 6f086e638142)

https://github.com/google/fuse-archive/commit/6f086e6381428d5b818dcb1bf7b9204e6bf017f0
GitHub commit Patch Available

commit 4b13a49b4bf6 (google/fuse-archive)

Patch available: google/fuse-archive v1.22 (contains commit 4b13a49b4bf6)

https://github.com/google/fuse-archive/commit/4b13a49b4bf66e0960241bab78987dde268a8b81

Vendor Advisories for CVE-2026-87723(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 29× 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 → 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.

  1. 2026-11-12 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-11-11 08:05 UTCEchelonGraph re-scored
  4. 2026-11-11 08:05 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96 · GitHub severity MODERATE
  5. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  7. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-11-05 16:39 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-11-04 02:01 UTCEchelonGraph re-scored
  11. 2026-11-04 02:01 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96 · GitHub severity MODERATE
  12. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  13. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  14. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  16. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  17. 2026-10-29 17:07 UTCEchelonGraph re-scored
  18. 2026-10-29 17:07 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  19. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  20. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  21. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  22. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  23. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  24. 2026-10-25 13:54 UTCEchelonGraph re-scored
  25. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 1st percentile
Show 58 more
  1. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-10-22 12:35 UTCEchelonGraph re-scored
  3. 2026-10-22 12:35 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  4. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  5. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  7. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-10-18 03:04 UTCEchelonGraph re-scored
  9. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  10. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  11. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  12. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  13. 2026-10-12 14:50 UTCEchelonGraph re-scored
  14. 2026-10-12 00:46 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  15. 2026-10-11 19:16 UTCEchelonGraph re-scored
  16. 2026-10-11 16:33 UTCEchelonGraph re-scored
  17. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  18. 2026-10-11 13:49 UTCEchelonGraph re-scored
  19. 2026-10-11 00:29 UTCEchelonGraph re-scored
  20. 2026-10-11 00:29 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  21. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  22. 2026-10-10 00:14 UTCEchelonGraph re-scored
  23. 2026-10-10 00:14 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  24. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-10-09 00:04 UTCEchelonGraph re-scored
  26. 2026-10-09 00:04 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  27. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  28. 2026-10-07 23:52 UTCEchelonGraph re-scored
  29. 2026-10-07 23:52 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  30. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  31. 2026-10-06 23:41 UTCEchelonGraph re-scored
  32. 2026-10-06 23:41 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  33. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  34. 2026-10-05 23:30 UTCEchelonGraph re-scored
  35. 2026-10-05 23:30 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  36. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  37. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  38. 2026-10-04 23:11 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  39. 2026-10-03 23:00 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  40. 2026-10-02 22:49 UTCEchelonGraph re-scored
  41. 2026-10-02 22:48 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  42. 2026-10-01 22:37 UTCEchelonGraph re-scored
  43. 2026-10-01 22:37 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  44. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  45. 2026-09-30 22:23 UTCEchelonGraph re-scored
  46. 2026-09-30 22:23 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  47. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  48. 2026-09-29 22:12 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  49. 2026-09-29 15:25 UTCEchelonGraph re-scored
  50. 2026-09-29 15:25 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  51. 2026-09-29 15:09 UTCEchelonGraph re-scored
  52. 2026-09-29 15:09 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  53. 2026-09-29 05:33 UTCEchelonGraph re-scored
  54. 2026-09-29 05:33 UTCGHSA enrichmentGHSA-q4qj-wcfm-8x96
  55. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  56. 2026-09-28 05:21 UTCEchelonGraph re-scored
  57. 2026-09-28 04:27 UTCEchelonGraph re-scoredFirst assessed: 5.4 MEDIUM
  58. 2026-09-28 04:27 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-87723?
CVE-2026-87723 is a medium-severity vulnerability; its CVE record was published on September 28, 2026. In Google fuse-archive versions prior to 1.24, an attacker who can prepend a directory to PATH or write a malicious binary to an attacker-controlled or writable directory appearing in PATH can hijack the execution pathway. This allows the attacker to execute arbitrary local code under the security…
When was CVE-2026-87723 made public?
CVE-2026-87723 was made public on August 22, 2026: that is the date its CVE record's CNA, Google LLC, gives for when the vulnerability was made public. The CVE record itself was published on September 28, 2026. EchelonGraph's copy of the record carries a last-modified date of September 29, 2026; the record at its source may have been updated since.
Is CVE-2026-87723 actively exploited?
CVE-2026-87723 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-87723?
CVE-2026-87723 has a CVSS base score of 5.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-87723?
A fix for CVE-2026-87723 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-87723 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-87723

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