CVE-2020-27619

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 8%CVSS: 9.8Exploit: None knownExposed: 0

A fix is available — apply it.

In Python 3 through 3.9.0, the Lib/test/multibytecodec_support.py CJK codec tests call eval() on content retrieved via HTTP.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: 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 computed
Severity98% × 45%
Exploitation8% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
8%
EPSS %ILE
95%
KEV
Not listed

Published

October 22, 2020

Last Modified

November 21, 2024

Advisory Details (10)

Auto-updated Sep 12, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

[SECURITY] Fedora 34 Update: python2.7-2.7.18-11.fc34 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RSLQD5CCM75IZGAMBDGUZEATYU5YSGJ7/
generic
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
generic
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
generic
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
github_commit

commit e912e945f296 (python/cpython)

Fix landed in python/cpython commit e912e945f296 — awaiting tagged release

https://github.com/python/cpython/commit/e912e945f2960029d039d3390ea08835ad39374b
github_commit

commit b664a1df4ee7 (python/cpython)

Fix landed in python/cpython commit b664a1df4ee7 — awaiting tagged release

https://github.com/python/cpython/commit/b664a1df4ee71d3760ab937653b10997081b1794
github_commit

commit 6c6c256df363 (python/cpython)

Fix landed in python/cpython commit 6c6c256df363 — awaiting tagged release

https://github.com/python/cpython/commit/6c6c256df3636ff6f6136820afaefa5a10a3ac33
github_commit

commit 43e523103886 (python/cpython)

Fix landed in python/cpython commit 43e523103886 — awaiting tagged release

https://github.com/python/cpython/commit/43e523103886af66d6c27cd72431b5d9d14cd2a9
github_commit

commit 2ef5caa58feb (python/cpython)

Fix landed in python/cpython commit 2ef5caa58feb — awaiting tagged release

https://github.com/python/cpython/commit/2ef5caa58febc8968e670e39e3d37cf8eef3cab8
generic

Issue 41944: [security][CVE-2020-27619] Python testsuite calls eval() on content received via HTTP - Python tracker

https://bugs.python.org/issue41944

Vendor Advisories for CVE-2020-27619(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(8)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupython3.5-venv (3.5.2-2ubuntu0~16.04.13+esm13) @ xenial2026-05-23ubuntu
ubuntupython3.5-venv (3.5.2-2ubuntu0~16.04.13) @ xenial2026-05-23ubuntu
ubuntupython2.7-minimal (2.7.18-1~20.04.1) @ focal2026-05-23ubuntu
redhatpython38-devel:3.8-8050020210811101222.e3d35cca2021-11-09redhat
redhatpython27:2.7-8050020210811095446.3e7ace8b2021-11-09redhat
redhatrh-python38-python-urllib3-0:1.25.7-7.el72021-08-24redhat
redhatpython27-python-pygments-0:1.5-5.el72021-08-24redhat
redhatpython3-0:3.6.8-37.el82021-05-18redhat

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

(6 across 4 ecosystems)
Debian:11(3)
PackageVulnerable rangeFixed inDependents
pypy3—7.3.5+dfsg-2—
python2.72.7.18-10 ... 2.7.18-9 (10 versions)——
python3.9—3.9.1~rc1-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pypy3—7.3.5+dfsg-2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pypy3—7.3.5+dfsg-2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
pypy3—7.3.5+dfsg-2—

Additional Vendor Advisories

(6)

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 / 22× 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 138 total refreshes for this CVE.

  1. 2026-09-18 19:23 UTCEPSS rescore
  2. 2026-09-17 19:22 UTCEPSS rescore
  3. 2026-09-16 14:04 UTCEPSS rescore
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  1. 2026-08-16 14:52 UTCEPSS rescore
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  3. 2026-08-15 03:37 UTCOSV refresh
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  5. 2026-08-13 21:57 UTCEPSS rescore
  6. 2026-08-12 13:47 UTCEPSS rescore
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  15. 2026-07-30 15:44 UTCOSV refresh
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  23. 2026-07-23 01:52 UTCEG score recompute
  24. 2026-07-22 22:38 UTCEG score recompute
  25. 2026-07-22 14:05 UTCEPSS rescore
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  40. 2026-07-13 00:38 UTCOSV refresh
  41. 2026-07-12 05:44 UTCEPSS rescore
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  44. 2026-07-09 19:07 UTCEPSS rescore
  45. 2026-07-08 15:12 UTCEPSS rescore
  46. 2026-07-07 13:43 UTCEPSS rescore
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  61. 2026-06-24 09:50 UTCOSV refresh
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  75. 2026-06-15 17:46 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-27619?
CVE-2020-27619 is a critical vulnerability published on October 22, 2020. In Python 3 through 3.9.0, the Lib/test/multibytecodec_support.py CJK codec tests call eval() on content retrieved via HTTP.
When was CVE-2020-27619 disclosed?
CVE-2020-27619 was first published in the National Vulnerability Database on October 22, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-27619 actively exploited?
CVE-2020-27619 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8% probability of exploitation in the next 30 days, which ranks it in the top 5.3% of all scored CVEs.
What is the CVSS score of CVE-2020-27619?
CVE-2020-27619 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-27619?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-27619, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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