6.5

CVE-2025-23167: nodejs node

Deferred
AliasesDEBIAN-CVE-2025-23167CGA-47h4-729f-qh8hCGA-8rqp-69hw-hqjg
Published 19-05-2025Last modified 27-05-2025

Vulnerability summary

CVE-2025-23167 is a medium (CVSS 6.5) vulnerability in nodejs node. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 43.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.5/10
010
Medium · v3.0 (CVE.org)
EPSS score
0.51%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 8 · Related 7
MGASA-2025-0161RHSA-2025:8468RHSA-2025:8514SUSE-SU-2025:02039-1SUSE-SU-2025:02045-1SUSE-SU-2026:4248-1

Timeline

  1. 19-05-2025
    PublishedVulnerability first disclosed.
  2. 27-05-2025
    Last modifiedVulnerability information updated.

Description

A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using `\r\n\rX` instead of the required `\r\n\r\n`. This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests. The issue was resolved by upgrading `llhttp` to version 9, which enforces correct header termination. Impact: * This vulnerability affects only Node.js 20.x users prior to the `llhttp` v9 upgrade.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.51%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.51% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard3 products
  • eco-nodejs-20.9.0All versions (No fix recorded)
  • nodejs-16< 16.20.2-r15
  • nodejs-18All versions (No fix recorded)
Wolfi2 products
  • nodejs-16< 16.20.2-r15
  • nodejs-18All versions (No fix recorded)
Debian1 product
  • node-undiciAll versions (No fix recorded) | < 7.15.0+dfsg+~cs3.2.0-1
Nodejs1 product
  • node≥ 4.0, < 4.* | ≥ 5.0, < 5.* | ≥ 6.0, < 6.* | ≥ 7.0, < 7.* | ≥ 8.0, < 8.* | ≥ 9.0, < 9.* | ≥ 10.0, < 10.* | ≥ 11.0, < 11.* | ≥ 12.0, < 12.* | ≥ 13.0, < 13.* | ≥ 14.0, < 14.* | ≥ 15.0, < 15.* | ≥ 16.0, < 16.* | ≥ 17.0, < 17.* | ≥ 18.0, < 18.* | ≥ 19.0, < 19.* | ≥ 20.0, ≤ 20.19.1

4 vendors · 7 products

References

2 links