An issue was discovered in Enigmail before 1.9.9.
Priority LOW 37CWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-347.
Summary
An issue was discovered in Enigmail before 1.9.9. In a variant of CVE-2017-17847, signature spoofing is possible for multipart/related messages because a signed message part can be referenced with a cid: URI but not actually displayed. In other words, the entire containing message appears to be signed, but the recipient does not see any of the signed text.
Why it matters now
EPSS 0.01843 79th 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:enigmail:enigmail:*:*:*:*:*:*:*:* | before 1.9.9 | Vulnerable | Enigmail |
| cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
- cpe:2.3:a:enigmail:enigmail:*:*:*:*:*:*:*:* Versions before 1.9.9 Vulnerable ·Enigmail
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-17848
- 2026-10-03 Alias added: GHSA-gvxj-mgw2-9vg3
References
Advisory 7
- https://sourceforge.net/p/enigmail/bugs/709/
- https://lists.debian.org/debian-security-announce/2017/msg00333.html
- [debian-lts-announce] 20171223 [SECURITY] [DLA 1219-1] enigmail security update
- DSA-4070
- [oss-security] 20190430 Spoofing OpenPGP and S/MIME Signatures in Emails (multiple clients)
- 20190430 OpenPGP and S/MIME signature forgery attacks in multiple email clients
- http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html
Sources
- CVE-2017-17848 · CVE Program
- CVE-2017-17848 · NVD
- FIRST EPSS
- GHSA-gvxj-mgw2-9vg3 · GitHub Advisory Database · CC BY 4.0
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