K-9 Mail v5.600 can include the original quoted HTML code of a specially crafted, benign…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
K-9 Mail v5.600 can include the original quoted HTML code of a specially crafted, benign looking, email within (digitally signed) reply messages. The quoted part can contain conditional statements that show completely different text if opened in a different email client. This can be abused by an attacker to obtain valid S/MIME or PGP signatures for arbitrary content to be displayed to a third party. NOTE: the vendor states "We don't plan to take any action because of this."
Why it matters now
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 · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:k-9_mail_project:k-9_mail:5.600:*:*:*:*:android:*:* | 5.600 | Vulnerable | K-9 Mail Project |
- cpe:2.3:a:k-9_mail_project:k-9_mail:5.600:*:*:*:*:android:*:* Versions 5.600 Vulnerable ·K-9 Mail Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-10741
- 2026-10-03 Alias added: GHSA-p93q-2cgh-jc3x
References
Sources
- CVE-2019-10741 · CVE Program
- CVE-2019-10741 · NVD
- FIRST EPSS
- GHSA-p93q-2cgh-jc3x · GitHub Advisory Database · CC BY 4.0
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