CVE-2026-114725
Roundcube Webmail Mail Header Injection Vulnerability
Description
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmail_sendmail stripped newline characters only from the Subject and Organization headers, leaving other header values taken from request parameters unsanitized, so a remote authenticated attacker could inject arbitrary headers into an outgoing message via the References, In-Reply-To, Message-ID and From parameters. Upstream fixed this in the commit “Fix mail header injection via References/In-Reply-To/Message-ID/From parameters”, which normalizes whitespace in every string header value.
INFO
Published Date :
Oct. 22, 2026, 2:17 a.m.
Last Modified :
Oct. 29, 2026, 2:33 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 8254265b-2729-46b6-b9e3-3dfca2d5bfca | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Roundcube Webmail to version 1.6.20 or later.
- Update Roundcube Webmail to version 1.7.5 or later.
- Apply the upstream commit fixing mail header injection.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-114725.
| URL | Resource |
|---|---|
| https://bugs.debian.org/1151279 | Third Party Advisory |
| https://github.com/roundcube/roundcubemail/commit/79adcfc0c48012bbbe930278471425027fd7331c | Patch Mailing List |
| https://github.com/roundcube/roundcubemail/commit/acd32a86f631dd6dcda8ac3ec7bd9ba4d4c0c117 | Patch |
| https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 | Release Notes |
| https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 | Release Notes |
| https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 | Issue Tracking |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-114725 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-114725
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-114725 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-114725 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 29, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:* versions from (including) 1.6.0 up to (excluding) 1.6.20 *cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:* versions from (including) 1.7.0 up to (excluding) 1.7.5 Added Reference Type MITRE: https://bugs.debian.org/1151279 Types: Third Party Advisory Added Reference Type MITRE: https://github.com/roundcube/roundcubemail/commit/79adcfc0c48012bbbe930278471425027fd7331c Types: Mailing List, Patch Added Reference Type MITRE: https://github.com/roundcube/roundcubemail/commit/acd32a86f631dd6dcda8ac3ec7bd9ba4d4c0c117 Types: Patch Added Reference Type MITRE: https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 Types: Release Notes Added Reference Type MITRE: https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 Types: Release Notes Added Reference Type MITRE: https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 Types: Issue Tracking -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 26, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-114725', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-10-26T19:17:07.656326Z'} -
New CVE Received by [email protected]
Oct. 22, 2026
Action Type Old Value New Value Added Description Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmail_sendmail stripped newline characters only from the Subject and Organization headers, leaving other header values taken from request parameters unsanitized, so a remote authenticated attacker could inject arbitrary headers into an outgoing message via the References, In-Reply-To, Message-ID and From parameters. Upstream fixed this in the commit “Fix mail header injection via References/In-Reply-To/Message-ID/From parameters”, which normalizes whitespace in every string header value. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N Added CWE CWE-99 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/114xxx/CVE-2026-114725.json">CVE-2026-114725</a> Added Reference https://bugs.debian.org/1151279 Added Reference https://github.com/roundcube/roundcubemail/commit/79adcfc0c48012bbbe930278471425027fd7331c Added Reference https://github.com/roundcube/roundcubemail/commit/acd32a86f631dd6dcda8ac3ec7bd9ba4d4c0c117 Added Reference https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 Added Reference https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 Added Reference https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5