Public proof of conceptFix available

CVE-2023-41080

Q: Is CVE-2023-41080 actively exploited?

Active exploitation of CVE-2023-41080 has not been confirmed. Its EPSS score was 6.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-41080?

CVE-2023-41080 has a CVSS v3 base score of 6.1 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

A public proof of concept exists; no exploitation attested.

Published2023-08-25
WeaknessCWE-601

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in FORM authentication feature Apache Tomcat.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.0.12, from 9.0.0-M1 through 9.0.79 and from 8.5.0 through 8.5.92. Older, EOL versions may also be affected. The vulnerability is limited to the ROOT (default) web application.

Timeline

dates in UTC

2023-08-2521:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-41080?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-41080?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Apache Tomcat

Branch	Affected	Fixed in	Source
8.5	≥ 8.5.0, ≤ 8.5.92	no fix published	NVD
9.0	≥ 9.0.0, ≤ 9.0.79	no fix published	NVD
10.1	≥ 10.1.0, ≤ 10.1.12	no fix published	NVD
11.0	= 11.0.0	no fix published	NVD

tomcat

Branch	Affected	Fixed in	Source
11.0	≥ 11.0.0-M1, < 11.0.0-M11	11.0.0-M11	OSV
10.1	≥ 10.1.0-M1, < 10.1.13	10.1.13	OSV
9.0	≥ 9.0.0-M1, < 9.0.80	9.0.80	OSV
8.5	≥ 8.5.0, < 8.5.93	8.5.93	OSV

tomcat-embed-core

Branch	Affected	Fixed in	Source
11.0	≥ 11.0.0-M1, < 11.0.0-M11	11.0.0-M11	OSV
10.1	≥ 10.1.0-M1, < 10.1.13	10.1.13	OSV
9.0	≥ 9.0.0-M1, < 9.0.80	9.0.80	OSV
8.5	≥ 8.5.0, < 8.5.93	8.5.93	OSV

3 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

tomcatAlmaLinux:9all versions · fixed in 1:9.0.62-37.el9_3.1and 7 other packages
tomcatAlmaLinux:8all versions · fixed in 1:9.0.62-27.el8_9.2and 7 other packages

Vendor advisories

RHSA-2024:4631 Red Hat Product Security3 products fixed
Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.15.0 release

Full record on NVD

Fix

Vendor fix Red Hat Product Security RHSA-2024:4631 · 3 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258

Advisories and patches

lists.apache.orgPatch · Vendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedsotiak/CVE-2023-41080

Sources

CISA-ADPSSVC decisionnone2024-09-27
OpenCVESSVC decisionnone—
NVDCVSS 3.16.1read 2026-10-23
CNAweakness (CWE)CWE-601read 2026-10-23
FIRST EPSSEPSS score6.5 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Published: 2023-08-25
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-41080?

Is CVE-2023-41080 actively exploited?

Active exploitation of CVE-2023-41080 has not been confirmed. Its EPSS score was 6.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-41080?

CVE-2023-41080 has a CVSS v3 base score of 6.1 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

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