CVE-2021-44026: Roundcube Webmail SQL Injection Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 22 Jun 2023, 580 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 69.9%
EPSS score, percentile 99.4 of all scored records
- How severe?
- 9.8 Critical
CVSS v3.1 base score, from CISA's enrichment of the record
- What should I do?
CISA deadline 13 Jul 2023. Apply updates per vendor instructions.
- Which versions are affected?
Not stated. The CVE record gives vendor and product as “n/a” and the version as “unspecified”.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
Apply updates per vendor instructions.
CISA due date for this action: 13 July 2023.
Advisories and patches
Linked from CISA's catalog entry
- https://roundcube.net/news/2021/11/12/security-updates-1.4.12-and-1.3.17-released
- https://nvd.nist.gov/vuln/detail/CVE-2021-44026
Affected products and versions
The CVE record does not name affected products or versions: vendor and product are “n/a” and the version is “unspecified”.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
Roundcube Webmail is vulnerable to SQL injection via search or search_params.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2021-44026 to its Known Exploited Vulnerabilities (KEV) catalog on 22 Jun 2023.
- CISA's ransomware flag for this entry is "Unknown": no evidence of ransomware use in the catalog, which is not proof of none.
- The due date CISA sets for the required action is 13 Jul 2023.
- The CVE record was published on 19 Nov 2021, 580 days before it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 9.8 (Critical), taken from CISA's enrichment of the record.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 69.9% (percentile 99.4), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
Description
Roundcube before 1.3.17 and 1.4.x before 1.4.12 is prone to a potential SQL injection via search or search_params.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Weakness
- CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| 19 Nov 2021 | CVE record published |
| 22 Jun 2023 | Added to CISA KEV |
| 13 Jul 2023 | CISA due date for the required action |
| 21 Oct 2025 | CVE record last updated |
References
- bugs.debian.org
- github.com
- github.com
- [debian-lts-announce] 20211206 [SECURITY] [DLA 2840-1] roundcube security update
More exploited Roundcube vulnerabilities
- CVE-2025-49113: RoundCube Webmail Deserialization of Untrusted Data Vulnerability
- CVE-2025-68461: RoundCube Webmail Cross-site Scripting Vulnerability
- CVE-2024-42009: RoundCube Webmail Cross-Site Scripting Vulnerability
- CVE-2024-37383: RoundCube Webmail Cross-Site Scripting (XSS) Vulnerability
- CVE-2020-13965: Roundcube Webmail Cross-Site Scripting (XSS) Vulnerability
- CVE-2023-43770: Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability