textview_uri_security_check in textview.c in Claws Mail before 3.18.0, and Sylpheed…
Priority LOW 30CWE-601Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-601.
Summary
textview_uri_security_check in textview.c in Claws Mail before 3.18.0, and Sylpheed through 3.7.0, does not have sufficient link checks before accepting a click.
Why it matters now
EPSS 0.01164 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:claws-mail:claws-mail:*:*:*:*:*:*:*:* | before 3.18.0 | Vulnerable | Claws Mail |
| cpe:2.3:a:sylpheed_project:sylpheed:*:*:*:*:*:*:*:* | up to 3.7.0 | Vulnerable | Sylpheed Project |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 33 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 34 | Vulnerable | Fedoraproject |
- cpe:2.3:a:claws-mail:claws-mail:*:*:*:*:*:*:*:* Versions before 3.18.0 Vulnerable ·Claws Mail
- cpe:2.3:a:sylpheed_project:sylpheed:*:*:*:*:*:*:*:* Versions up to 3.7.0 Vulnerable ·Sylpheed Project
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2021-37746
- 2026-10-03 Alias added: GHSA-7cx5-4rpx-pcm3
References
Sources
- CVE-2021-37746 · CVE Program
- CVE-2021-37746 · NVD
- FIRST EPSS
- GHSA-7cx5-4rpx-pcm3 · GitHub Advisory Database · CC BY 4.0
- CVE-2021-37746 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences