Known exploited vulnerability
CVE-2025-49113
The short answer
CVE-2025-49113 affects Roundcube Webmail and is rated high (CVSS 8.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-02-20: attackers are using it, so patch it first. Fixed versions are published for roundcube/roundcubemail (1.5.10, 1.6.11).
What it is
Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because the _from parameter in a URL is not validated in program/actions/settings/upload.php, leading to PHP Object Deserialization.
Weakness: CWE-502.
Severity
8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Feb 20, 2026
Federal due date Mar 13, 2026
EPSS, next 30 days
100%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected packages and fixed versions
| Package | Ecosystem | Fixed in | Advisory |
|---|---|---|---|
| roundcube/roundcubemail | Packagist | 1.5.10, 1.6.11 | GHSA-8j8w-wwqc-x596 |
Is it in your code? Drop your lockfile into the free vulnerability check, or let vulnerability watch check your repository every day and open the upgrade as a pull request.
Affected products
Webmail. NVD's record lists the exact affected versions.
References
- fearsoff.org/research/roundcube Third Party Advisory
- github.com/roundcube/roundcubemail/commit/0376f69e958a8fef7f6f09e352c541b4e7729c4d Patch
- github.com/roundcube/roundcubemail/commit/7408f31379666124a39f9cb1018f62bc5e2dc695 Patch
- github.com/roundcube/roundcubemail/commit/c50a07d88ca38f018a0f4a0b008e9a1deb32637e Patch
- github.com/roundcube/roundcubemail/pull/9865 Issue Tracking
- github.com/roundcube/roundcubemail/releases/tag/1.5.10 Release Notes
- github.com/roundcube/roundcubemail/releases/tag/1.6.11 Release Notes
- roundcube.net/news/2025/06/01/security-updates-1.6.11-and-1.5.10 Vendor Advisory
- www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-mitigation-script ExploitMitigationThird Party Advisory
- www.vicarius.io/vsociety/posts/cve-2025-49113-roundcube-vulnerability-detection ExploitMitigationThird Party Advisory
- lists.debian.org/debian-lts-announce/2025/06/msg00008.html Mailing ListThird Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-49113 US Government Resource
Questions
Is CVE-2025-49113 being exploited?
Yes. CISA added CVE-2025-49113 to its Known Exploited Vulnerabilities catalog on 2026-02-20, with a federal remediation due date of 2026-03-13.
How do I fix CVE-2025-49113?
Upgrade to a fixed version: roundcube/roundcubemail (Packagist) 1.5.10 or 1.6.11. CISA's required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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