CVE Explorer

CVE-2026-1299

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".

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:548efa9fac818aa4fcd9055e0c6effc58e1ceab0562717ebeebaa5b27e035812

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","modules":["email"],"product":"CPython","repo":"https://github.com/python/cpython","vendor":"Python Software Foundation","versions":[{"lessThan":"3.10.20","status":"affected","version":"0","versionType":"python"},{"lessThan":"3.11.15","status":"affected","version":"3.11.0","versionType":"python"},{"lessThan":"3.12.13","status":"affected","version":"3.12.0","versionType":"python"},{"lessThan":"3.13.12","status":"affected","version":"3.13.0","versionType":"python"},{"lessThan":"3.14.3","status":"affected","version":"3.14.0","versionType":"python"},{"lessThan":"3.15.…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-93","description":"CWE-93","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/problemTypes/0/descriptions/0

Source references

10 source assertions

{"tags":["related"],"url":"https://cve.org/CVERecord?id=CVE-2024-6923"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/2

{"tags":["patch"],"url":"https://github.com/python/cpython/commit/052e55e7d44718fe46cbba0ca995cb8fcc359413"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/4

{"tags":["patch"],"url":"https://github.com/python/cpython/commit/0a925ab591c45d6638f37b5e57796f36fa0e56d8"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/5

{"tags":["patch"],"url":"https://github.com/python/cpython/commit/7877fe424415bc4a13045e62a90a7277413d8cb9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/6

{"tags":["patch"],"url":"https://github.com/python/cpython/commit/842ce19a0c0b58d61591e8f6a708c38db1fb94e4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/7

{"tags":["patch"],"url":"https://github.com/python/cpython/commit/8cdf6204f4ae821f32993f8fc6bad0d318f95f36"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/8

{"tags":["patch"],"url":"https://github.com/python/cpython/commit/e417f05ad77a4c30ddc07f99e90fc0cef43e831a"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/9

{"tags":["issue-tracking"],"url":"https://github.com/python/cpython/issues/144125"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/1

{"tags":["patch"],"url":"https://github.com/python/cpython/pull/144126"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/0

{"tags":["vendor-advisory"],"url":"https://mail.python.org/archives/list/security-announce@python.org/thread/6ZZULGALJTITEAGEXLDJE2C6FORDXPBT/"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3a09539e933dc6ba51cc4d943bd34903e7f33273b605c832a819c3a21b3e6d29 · sha256:a6a1b64d88e93d2a… · /containers/cna/references/3

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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