CVE-2026-91089

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory (severity: LOW) published 2026-09-15. a secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: None knownExposed: 0

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

A vulnerability was found in GPAC up to f1219cde. Impacted is the function gf_node_get_name_and_id of the file scenegraph/base_scenegraph.c. The manipulation results in use after free. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version abi-16.23 is recommended to address this issue. The patch is identified as 49dee5cad329cfed310c1682703df7daa47df31a. You should upgrade the affected component.

CVSS v3
6.3
EG Score
6.3(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
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 49dee5cad329 (gpac/gpac)

Fix landed in gpac/gpac commit 49dee5cad329 — awaiting tagged release

https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a
generic
https://github.com/user-attachments/files/30399830/poc_16_bt.zip
generic

heap-use-after-free in `gf_node_get_name_and_id` during BT scene dump · Issue #3809 · gpac/gpac · GitHub

https://github.com/gpac/gpac/issues/3809

Vendor Advisories for CVE-2026-91089(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 23× in last 7d / 23× 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. 2026-09-19 18:54 UTCEG score recompute
  2. 2026-09-19 18:54 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 19:10 UTCEG score recompute
  5. 2026-09-18 19:10 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 19:23 UTCGHSA enrichment
  8. 2026-09-16 18:17 UTCEG score recompute
  9. 2026-09-16 18:17 UTCGHSA enrichment
  10. 2026-09-16 14:09 UTCEPSS rescore
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 18:33 UTCEG score recompute
  13. 2026-09-15 18:33 UTCGHSA enrichment
  14. 2026-09-15 18:31 UTCNVD updateCVSS v4 → 2.1
  15. 2026-09-15 17:44 UTCEG score recompute
  16. 2026-09-15 17:44 UTCGHSA enrichment
  17. 2026-09-15 17:43 UTCMITRE cvelistV5CVSS v4 → 5.3
  18. 2026-09-15 14:52 UTCEG score recompute
  19. 2026-09-15 14:52 UTCGHSA enrichment
  20. 2026-09-15 08:26 UTCEG score recompute
  21. 2026-09-15 08:25 UTCNVD updateCVSS v4 → 2.1
  22. 2026-09-15 07:28 UTCEG score recompute
  23. 2026-09-15 07:27 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-91089?
CVE-2026-91089 is a medium vulnerability published on September 15, 2026. A vulnerability was found in GPAC up to f1219cde. Impacted is the function gfnodegetnameandid of the file scenegraph/basescenegraph.c. The manipulation results in use after free. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version…
When was CVE-2026-91089 disclosed?
CVE-2026-91089 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-2026-91089 actively exploited?
CVE-2026-91089 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 77.9% of all scored CVEs.
What is the CVSS score of CVE-2026-91089?
CVE-2026-91089 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-91089?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-91089, 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-2026-91089

Explore →

Is Your Infrastructure Affected by CVE-2026-91089?

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

Start Free Scan →Browse All CVEs