How severe is CVE-2023-32987?

CVE-2023-32987 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2023-32987?

CVE-2023-32987 affects the following packages: org.jenkins-ci.plugins:reverse-proxy-auth-plugin (Maven). Ecosystems affected: Maven.

How do I fix CVE-2023-32987?

Update org.jenkins-ci.plugins:reverse-proxy-auth-plugin to 1.7.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-32987 is resolved across your whole dependency graph.

How do I detect CVE-2023-32987 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:reverse-proxy-auth-plugin, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2023-32987 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Is CVE-2023-32987 actively exploited in the wild?

No public exploit code has been indexed for CVE-2023-32987 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2023-32987?

CVE-2023-32987 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 39th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2023-32987?

CVE-2023-32987 is classified as Cross-Site Request Forgery (CSRF) (CWE-352). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2023-32987 published, and has it been updated?

CVE-2023-32987 was published on May 16, 2023 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

HIGH severity

CVE-2023-32987 — reverse-proxy-auth-plugin

HIGH

CVE-2023-32987 is a high-severity (CVSS 8.8) Cross-Site Request Forgery (CSRF) vulnerability in org.jenkins-ci.plugins:reverse-proxy-auth-plugin. A fix is available for org.jenkins-ci.plugins:reverse-proxy-auth-plugin — see the affected versions and patch details below.

Jenkins Reverse Proxy Auth Plugin cross-site request forgery vulnerability

Also known asGHSA-pmmr-r9v2-59p8

Published

May 16, 2023

Updated

Oct 24, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 4, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

A successful exploit gives an attacker total control of the affected component, not partial access.
CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2023-32987.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs39th percentile — riskier than 39% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

☕org.jenkins-ci.plugins:reverse-proxy-auth-plugin

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Jenkins Reverse Proxy Auth Plugin 1.7.4 and earlier does not require POST requests for a form validation method, resulting in a cross-site request forgery (CSRF) vulnerability.

This vulnerability allows attackers to connect to an attacker-specified LDAP server using attacker-specified credentials.

Reverse Proxy Auth Plugin 1.7.5 requires POST requests for the affected form validation method.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.jenkins-ci.plugins:reverse-proxy-auth-plugin`	all versions	1.7.5`org.jenkins-ci.plugins:reverse-proxy-auth-plugin:1.7.5`

Affected Products

1 product · 1 configurations

Application

reverse proxy authjenkins

≤ 1.7.4

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:reverse-proxy-auth-plugin, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.jenkins-ci.plugins:reverse-proxy-auth-plugin to 1.7.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-32987 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

Jenkins Reverse Proxy Auth Plugin 1.7.4 and earlier does not require POST requests for a form validation method, resulting in a cross-site request forgery (CSRF) vulnerability. This vulnerability allows attackers to connect to an attacker-specified LDAP server using attacker-specified credentials. Reverse Proxy Auth Plugin 1.7.5 requires POST requests for the affected form validation method.

O3 Security · Impact-Aware SCA

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Find it across Maven, including transitive dependencies.

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CVSS Score

8.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE Classification

CWE-352Cross-Site Request Forgery (CSRF)

Weaponization

No Nuclei template, Metasploit module or public proof-of-concept found.

Timeline

Disclosed

May 16, 2023

Last updated

Oct 24, 2026

Identifiers

CVE-2023-32987

GHSA-pmmr-r9v2-59p8

References

Advisoryjenkins.io · 2023 05 16 Advisorynvd.nist.gov · CVE 2023 32987

Related vulnerabilities

Also affects reverse-proxy-auth-plugin

This CVE is high severity — higher than any of the other 1 CVE affecting reverse-proxy-auth-plugin (highest there: low).

CVE-2018-1000150

Same weakness: CWE-352

This CVE is high severity; 2 of 7 other CVEs with CWE-352 are rated as high or higher (top: high).

CVE-2026-96629CVE-2026-118266CVE-2026-113796CVE-2026-84312CVE-2026-62322CVE-2026-107809CVE-2026-107848Browse all CWE-352

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedOct 24, 2026

CVE-2023-32987 — reverse-proxy-auth-plugin

Exploitation Status

No confirmed exploitation observed yet

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2023-32987 in your dependencies?