CVE-2026-91087

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory published 2026-09-15. a secondary CVSS source baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A flaw has been found in GPAC up to f1219cde. This vulnerability affects the function gf_mo_get_od_id of the file compositor/media_object.c of the component Compositor. Executing a manipulation can lead to use after free. The attack may be performed from remote. The exploit has been published and may be used. Upgrading to version abi-16.24 is able to resolve this issue. This patch is called e34f4ba349d55cd1849f0bcf4cf46552732e2db7. Upgrading the affected component is advised.

CVSS v3
7.3
EG Score
7.3(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 15, 2026

Advisory Details (4)

Auto-updated Sep 15, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

GitHub - gpac/gpac: GPAC Ultramedia OSS for Video Streaming & Next-Gen Multimedia Transcoding, Packaging & Delivery · GitHub

https://github.com/gpac/gpac/
github_commit

commit e34f4ba349d5 (gpac/gpac)

Fix landed in gpac/gpac commit e34f4ba349d5 — awaiting tagged release

https://github.com/gpac/gpac/commit/e34f4ba349d55cd1849f0bcf4cf46552732e2db7
generic
https://github.com/user-attachments/files/30399593/poc_12_info.zip
generic

heap-use-after-free in `gf_mo_get_od_id` during proto instantiation · Issue #3807 · gpac/gpac · GitHub

https://github.com/gpac/gpac/issues/3807

Vendor Advisories for CVE-2026-91087(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 24× 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.

  1. 2026-09-20 14:15 UTCGHSA enrichment
  2. 2026-09-20 01:04 UTCEG score recompute
  3. 2026-09-20 01:04 UTCGHSA enrichment
  4. 2026-09-19 11:53 UTCGHSA enrichment
  5. 2026-09-18 22:40 UTCEG score recompute
  6. 2026-09-18 22:40 UTCGHSA enrichment
  7. 2026-09-18 19:28 UTCEPSS rescore
  8. 2026-09-18 09:29 UTCGHSA enrichment
  9. 2026-09-17 20:18 UTCEG score recompute
  10. 2026-09-17 20:18 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-17 07:07 UTCGHSA enrichment
  13. 2026-09-16 17:55 UTCEG score recompute
  14. 2026-09-16 17:55 UTCGHSA enrichment
  15. 2026-09-16 14:09 UTCEPSS rescore
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-16 04:23 UTCGHSA enrichment
  18. 2026-09-15 14:52 UTCGHSA enrichment
  19. 2026-09-15 14:32 UTCEG score recompute
  20. 2026-09-15 14:32 UTCGHSA enrichment
  21. 2026-09-15 07:32 UTCEG score recompute
  22. 2026-09-15 07:30 UTCNVD updateCVSS v4 → 5.5
  23. 2026-09-15 06:59 UTCEG score recompute
  24. 2026-09-15 06:58 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-91087?
CVE-2026-91087 is a high vulnerability published on September 15, 2026. A flaw has been found in GPAC up to f1219cde. This vulnerability affects the function gfmogetodid of the file compositor/media_object.c of the component Compositor. Executing a manipulation can lead to use after free. The attack may be performed from remote. The exploit has been published and may…
When was CVE-2026-91087 disclosed?
CVE-2026-91087 was first published in the National Vulnerability Database on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-91087 actively exploited?
CVE-2026-91087 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 69.0% of all scored CVEs.
What is the CVSS score of CVE-2026-91087?
CVE-2026-91087 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-91087?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-91087, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-91087

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