# Roundcube Webmail: Unsanitized IMAP SEARCH command arguments

Advisory record · `GHSA-8jr8-v43g-5c57`

- **Identifiers:** `GHSA-8jr8-v43g-5c57` · `CVE-2026-35538` · `PKSA-764m-m66v-9t4g`
- **State:** Confirmed
- **Severity:** CVSS 3.1 Low
- **Critical:** No
- **Weakness (CWE):** [CWE-88](https://cwe.mitre.org/data/definitions/88.html)
- **Tags:** [Command injection](https://agentprime.io/advisories/tag/command-injection.md)
- **Published:** 3 Apr 2026
- **Updated:** 4 Apr 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 3 Apr 2026, 06:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `roundcube/roundcubemail` (Packagist): affected `>=1.7-beta, <1.7-rc5`; fixed in `1.7-rc5`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> Roundcube Webmail before 1.5.14 and 1.6.14 is affected, and so is the roundcube/roundcubemail package from 1.7-beta before 1.7-rc5. Unsanitized IMAP SEARCH arguments could allow IMAP injection or a CSRF bypass during mail search, and the source gives few details on what an attacker needs. Upgrade to 1.5.14, 1.6.14, or 1.7-rc5, depending on your branch.

Written 3 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 3.1 Low, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N`, from CNA (mitre)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0043, the 37th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:25 UTC: First seen by agentprime
- 31 Oct 2026, 14:25 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-8jr8-v43g-5c57)

## Sources

- [GitHub Advisory Database: GHSA-8jr8-v43g-5c57](https://github.com/advisories/GHSA-8jr8-v43g-5c57)
- [OSV: GHSA-8jr8-v43g-5c57](https://osv.dev/vulnerability/GHSA-8jr8-v43g-5c57)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-35538>
- <https://github.com/roundcube/roundcubemail/commit/5fe8a69956a9683a4269f3ad2a68e18deebf8a15>
- <https://github.com/roundcube/roundcubemail/commit/7daf5aa9c190ccc75bb31672d8fee9938877fd64>
- <https://github.com/roundcube/roundcubemail/commit/b18a8fa8e81571914c0ff55d4e20edb459c6952c>
- <https://github.com/roundcube/roundcubemail>
- <https://github.com/roundcube/roundcubemail/releases/tag/1.5.14>
- <https://github.com/roundcube/roundcubemail/releases/tag/1.6.14>
- <https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5>
- <https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-8jr8-v43g-5c57>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-8jr8-v43g-5c57/>. Everything for agents: <https://agentprime.io/llms.txt>.