VDB
DEBIAN-CVE-2026-1299
DEBIAN-CVE-2026-1299
PUBLISHED
CVSS 6 MEDIUM
The email module, specifically the "BytesGenerator" class, didn’t properly quote newlines for email headers when serializing an email message allowing for header injection when an email is serialized. This is only applicable if using "LiteralHeader" writing headers that don't respect email folding rules, the new behavior will reject the incorrectly folded headers in "BytesGenerator".
Risk Scores
CVSS 4.0
6
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | python3.14 | 3.14.0, 3.14.2-1, 3.14.0-2 |
| Debian:14 | pypy3 | *, 7.3.20+dfsg, 7.3.20+dfsg |
| Debian:14 | python3.13 | 3.13.6-1, 3.13.9-1, 3.13.9-1 |
| Debian:12 | python3.11 | *, *, * |
| Debian:11 | pypy3 | 7.3.7+dfsg, 7.3.7+dfsg, 7.3.7+dfsg |
| Debian:13 | pypy3 | 7.3.20+dfsg-2, 7.3.20+dfsg-3, 7.3.20+dfsg-4 |
| Debian:12 | pypy3 | 7.3.21+dfsg-2, 7.3.21+dfsg-3, 7.3.21+dfsg-4 |
| Debian:13 | python3.13 | 0, 3.13.11-1, 3.13.12-1 |
| Debian:11 | python3.9 | 3.9.2-1, 3.9.2-1, 3.9.2-1 |
Timeline
- Jan 23, 2026 CVE Published
- May 16, 2026 CVE Updated