During an address list folding when a separating comma ends up on a folded line and that line is to be unicode-encoded then the separator itself is also unicode-encoded. Expected behavior is that the separating comma remains a plan comma. This can result in the address header being misinterpreted by some mail servers.
CVE-2025-1795
This low-severity CVE scores 2.3 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 55% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 2.3
- EG Score
- 2.3(medium)
- EG Risk
- 11(Track)EG Risk 11/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity23% × 45%Exploitation1% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 48%
- KEV
- Not listed
Published
February 28, 2025
Last Modified
July 31, 2026
References (10)
- cna@pythonhttps://github.com/python/cpython/commit/09fab93c3d857496c0bd162797fab816c311ee48
- cna@pythonhttps://github.com/python/cpython/commit/70754d21c288535e86070ca7a6e90dcb670b8593
- cna@pythonhttps://github.com/python/cpython/commit/9148b77e0af91cdacaa7fe3dfac09635c3fe9a74
- cna@pythonhttps://github.com/python/cpython/commit/a4ef689ce670684ec132204b1cd03720c8e0a03d
- cna@pythonhttps://github.com/python/cpython/commit/d4df3c55e4c5513947f907f24766b34d2ae8c090
- cna@pythonhttps://github.com/python/cpython/issues/100884
- cna@pythonhttps://github.com/python/cpython/pull/100885
- cna@pythonhttps://github.com/python/cpython/pull/119099
- cna@pythonhttps://mail.python.org/archives/list/[email protected]/thread/MB62IZMEC3UM6SGHP5LET5JX2Y7H4ZUR/
- af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00013.html
Vendor Advisories for CVE-2025-1795(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3.12-venv (3.12.3-1ubuntu0.6) @ noble | 2026-07-31 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(8 across 4 ecosystems)
Debian:11(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| pypy3 | 7.3.5+dfsg-2, 7.3.5+dfsg-2+deb11u1, 7.3.5+dfsg-2+deb11u2, 7.3.5+dfsg-2+deb11u3, 7.3.5+dfsg-2+deb11u4 | 7.3.5+dfsg-2+deb11u5 | — |
| python3.9 | 3.9.2-1, 3.9.2-1+deb11u1, 3.9.2-1+deb11u2 | 3.9.2-1+deb11u3 | — |
Debian:12(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| pypy3 | 7.3.11+dfsg-2 ... 7.3.23+dfsg-1 (29 versions) | — | — |
| python3.11 | 3.11.2-6 ... 3.11.2-6+deb12u5 (6 versions) | 3.11.2-6+deb12u6 | — |
Debian:13(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| pypy3 | — | 7.3.18+dfsg-1 | — |
| python3.13 | — | 3.13.0~b1-1 | — |
Debian:14(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| pypy3 | — | 7.3.18+dfsg-1 | — |
| python3.13 | — | 3.13.0~b1-1 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.
Data Freshness Timeline
(refreshed 5× in last 7d / 28× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 192 total refreshes for this CVE.
- 2026-09-18 19:27 UTCEPSS rescore
- 2026-09-16 14:06 UTCEPSS rescore
- 2026-09-16 05:13 UTCEPSS rescore
- 2026-09-15 03:08 UTCEPSS rescore
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- 2026-09-04 05:05 UTCEPSS rescore
- 2026-09-02 14:10 UTCEPSS rescore
- 2026-09-01 19:35 UTCOSV refresh
- 2026-09-01 13:52 UTCEPSS rescore
- 2026-09-01 04:38 UTCEPSS rescore
- 2026-08-30 19:16 UTCEPSS rescore
- 2026-08-30 01:21 UTCEPSS rescore
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- 2026-08-27 14:24 UTCEPSS rescore
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- 2026-08-25 13:47 UTCEPSS rescore
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- 2026-08-23 00:18 UTCEPSS rescore
- 2026-08-21 23:48 UTCEPSS rescore
- 2026-08-20 22:54 UTCEPSS rescore
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- 2026-08-18 13:47 UTCEPSS rescore
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- 2026-08-16 02:13 UTCEPSS rescore
- 2026-08-16 02:13 UTCEPSS rescore
- 2026-08-15 21:07 UTCOSV refresh
- 2026-08-15 01:29 UTCEPSS rescore
- 2026-08-13 21:59 UTCEPSS rescore
- 2026-08-12 13:49 UTCEPSS rescore
- 2026-08-11 13:41 UTCEPSS rescore
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- 2026-08-02 02:25 UTCEPSS rescore
- 2026-08-01 04:14 UTCEPSS rescore
- 2026-07-31 14:25 UTCVendor advisory
- 2026-07-31 14:25 UTCGHSA enrichment
- 2026-07-31 14:09 UTCVendor advisory
- 2026-07-31 14:09 UTCGHSA enrichment
- 2026-07-30 23:20 UTCVendor advisory
- 2026-07-30 23:20 UTCGHSA enrichment
- 2026-07-30 22:22 UTCEG score recompute
- 2026-07-30 22:22 UTCVendor advisory
- 2026-07-30 22:22 UTCGHSA enrichment
- 2026-07-30 16:26 UTCEPSS rescore
- 2026-07-30 01:29 UTCEPSS rescore
- 2026-07-28 15:35 UTCEPSS rescore
- 2026-07-27 14:12 UTCEPSS rescore
- 2026-07-26 14:53 UTCEPSS rescore
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- 2026-07-24 14:16 UTCEPSS rescore
- 2026-07-23 14:17 UTCEPSS rescore
- 2026-07-23 02:49 UTCEG score recompute
- 2026-07-22 14:07 UTCEPSS rescore
- 2026-07-22 14:07 UTCEPSS rescore
- 2026-07-21 15:24 UTCEPSS rescore
- 2026-07-19 14:30 UTCEPSS rescore
- 2026-07-19 14:30 UTCEPSS rescore
- 2026-07-19 02:28 UTCEPSS rescore
- 2026-07-19 02:28 UTCEPSS rescore
- 2026-07-18 10:03 UTCEPSS rescore
- 2026-07-16 17:02 UTCEPSS rescore
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- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 01:59 UTCEPSS rescore
- 2026-07-15 01:59 UTCEPSS rescore
- 2026-07-14 08:25 UTCOSV refresh
- 2026-07-13 22:29 UTCEPSS rescore
- 2026-07-13 22:29 UTCEPSS rescore
- 2026-07-13 06:12 UTCEPSS rescore
- 2026-07-12 05:46 UTCEPSS rescore
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- 2026-07-09 19:09 UTCEPSS rescore
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- 2026-07-01 15:06 UTCEPSS rescore
- 2026-06-30 23:21 UTCEPSS rescore
- 2026-06-29 14:06 UTCEPSS rescore
Frequently asked(5)
What is CVE-2025-1795?
When was CVE-2025-1795 disclosed?
Is CVE-2025-1795 actively exploited?
What is the CVSS score of CVE-2025-1795?
How do I remediate CVE-2025-1795?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-1795
Is Your Infrastructure Affected by CVE-2025-1795?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.