An issue in Gevent before version 23.9.0 allows a remote attacker to escalate privileges via a crafted script to the WSGIServer component.
CVE-2023-41419
“—” beside the score: it is equal to NVD's CVSS score.
This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.8% (78th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 9.8
- EG Score
- 9.8CRITICALmedium confidence
- EG Risk
- 45EG Risk 45/100
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 (value × EchelonGraph’s weight)Severity98% × 45%The EG Score, 9.8 of 10.Exploitation1.8% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines. - EPSS PROB
- 1.8%
- EPSS %ILE
- 78th
- KEV
- Not listed
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
September 25, 2023
Last Modified
June 17, 2026
Advisory Details (3)
Auto-updated Oct 5, 2026[SECURITY] [DLA 4377-1] python-gevent security update
https://lists.debian.org/debian-lts-announce/2025/11/msg00020.htmlVulnerability in gevent.pywsgi.WSGIServer · Issue #1989 · gevent/gevent · GitHub
https://github.com/gevent/gevent/issues/1989commit 2f53c851eaf9 (gevent/gevent)
Fix landed in gevent/gevent commit 2f53c851eaf9 — awaiting tagged release
https://github.com/gevent/gevent/commit/2f53c851eaf926767fbac62385615efd4886221cVendor Advisories for CVE-2023-41419(5)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2024:8834Red Hat Product SecurityHigh
Red Hat Security Advisory: python-gevent security update
- RHSA-2024:8105Red Hat Product SecurityHigh
Red Hat Security Advisory: python-gevent security update
- RHSA-2024:7785Red Hat Product SecurityHigh
Red Hat Security Advisory: python-gevent security update
- RHSA-2024:7421Red Hat Product SecurityHigh
Red Hat Security Advisory: python-gevent security update
- CVE-2023-41419Microsoft Security Response Center (MSRC)Critical
An issue in Gevent before version 23.9.0 allows a remote attacker to escalate privileges via a crafted script to the WSGIServer component.
Patch Availability(6)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | python-gevent-0:1.2.2-5.el8_10 | 2024-11-05 | redhat |
| redhat | python-gevent-0:1.2.2-5.el8_8 | 2024-10-15 | redhat |
| redhat | python-gevent-0:1.2.2-5.el8_4 | 2024-10-15 | redhat |
| redhat | python-gevent-0:1.2.2-5.el8_2 | 2024-10-08 | redhat |
| redhat | python-gevent-0:1.2.2-5.el8_6 | 2024-10-01 | redhat |
| redhat | python-gevent-0:21.1.2-2.el9ost | 2023-11-21 | redhat |
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
(5 across 5 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gevent | 20.9.0-2 |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gevent | 22.10.2-3 ... 25.9.1-2 (8 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gevent | — |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-gevent | — |
| — |
PyPI(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| gevent | 0.10.0 ... 0.9.0 (114 versions) |
| — |
Additional Vendor Advisories
(2)
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 16× in last 7d / 37× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 83 of 196 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 17 repeat rows among the latest 100 are merged into the row they repeat. The 113 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-16 02:56 UTCEG score recompute
- 2026-10-16 02:56 UTCVendor advisory
- 2026-10-15 16:29 UTCEPSS rescoreEPSS 1.8% · 78th percentile
- 2026-10-14 22:59 UTCEG score recompute
- 2026-10-14 22:59 UTCVendor advisory
- 2026-10-14 16:30 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-13 18:41 UTCEG score recompute
- 2026-10-13 18:41 UTCVendor advisory
- 2026-10-13 16:30 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-12 16:48 UTCEG score recompute
- 2026-10-12 16:48 UTCVendor advisory
- 2026-10-12 16:31 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-11 21:46 UTCEG score recompute
- 2026-10-11 13:45 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-10 19:57 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-09 20:05 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-08 17:06 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-07 23:46 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-06 15:15 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-05 17:41 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-04 23:20 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-03 14:23 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-10-01 19:48 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-09-30 16:29 UTCEG score recompute
- 2026-09-30 15:01 UTCEPSS rescoreEPSS 1.8% · 77th percentile
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- 2026-09-29 15:17 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-09-28 13:49 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-09-27 13:42 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-09-26 15:56 UTCEPSS rescoreEPSS 1.8% · 77th percentile
- 2026-09-26 00:22 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-09-24 14:01 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-09-23 13:46 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-09-22 23:01 UTCOSV refresh
- 2026-09-18 19:25 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-09-17 19:25 UTCEPSS rescoreEPSS 1.3% · 70th percentile
- 2026-09-16 14:06 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-16 05:11 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-13 16:44 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-12 14:58 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-11 14:50 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-11 09:34 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-08 21:58 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-07 15:59 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-06 13:45 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-05 15:26 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-04 13:58 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-04 05:04 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-03 17:46 UTCOSV refresh
- 2026-09-02 14:09 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-09-01 13:51 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-30 19:15 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-30 01:20 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-28 21:39 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-27 14:23 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-26 14:43 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-25 13:46 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-23 00:17 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-21 23:47 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-20 22:53 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-19 17:02 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-18 13:46 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-17 13:45 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-17 06:57 UTCOSV refresh
- 2026-08-16 14:54 UTCEPSS rescoreEPSS 1.3% · 69th percentile
- 2026-08-16 02:12 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-15 01:28 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-13 21:58 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-12 13:48 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-11 13:39 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-09 13:44 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-08 16:35 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-07 16:25 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-06 13:45 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-05 19:15 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-04 15:07 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-03 10:34 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-02 02:25 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-08-02 01:36 UTCOSV refresh
- 2026-08-01 04:13 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-07-30 16:26 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-07-30 01:28 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-07-28 15:34 UTCEPSS rescoreEPSS 1.3% · 68th percentile
- 2026-07-26 14:52 UTCEPSS rescoreEPSS 1.3% · 68th percentile
Frequently asked(5)
What is CVE-2023-41419?
When was the CVE record for CVE-2023-41419 published?
Is CVE-2023-41419 actively exploited?
What is the CVSS score of CVE-2023-41419?
How do I remediate CVE-2023-41419?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-41419
Is Your Infrastructure Affected by CVE-2023-41419?
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