3.4

CVE-2025-7339: on-headers vulnerable to http response header manipulation

Deferred
AliasesUBUNTU-CVE-2025-7339DEBIAN-CVE-2025-7339CGA-2558-cm37-538v
Published 17-07-2025Last modified 17-07-2025

Vulnerability summary

CVE-2025-7339 is a low (CVSS 3.4) vulnerability in jshttp on-headers. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 3.4, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
3.4/10
010
Low · v3.1 (CVE.org)
EPSS score
0.21%
0%100%
Low · +0.03 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 1 · Related 6
OPENSUSE-SU-2026:20919-1CGA-6CVC-Q4PG-M73CCGA-7CCG-JM7Q-GWXVCGA-7QM2-WGVR-899FCGA-FMG2-47PM-F9HFCGA-H46M-GPR2-3PF5

Timeline

  1. 17-07-2025
    PublishedVulnerability first disclosed.
  2. 17-07-2025
    Last modifiedVulnerability information updated.

Description

on-headers is a node.js middleware for listening to when a response writes headers. A bug in on-headers versions `<1.1.0` may result in response headers being inadvertently modified when an array is passed to `response.writeHead()`. Users should upgrade to version 1.1.0 to receive a patch. Uses are strongly encouraged to upgrade to `1.1.0`, but this issue can be worked around by passing an object to `response.writeHead()` rather than an array.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

Increase +0.03 pp

From 0.18% 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: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard55 products
  • arangodb-3.11< 3.11.14.5-r25
  • arangodb-3.12< 3.12.11-r0
  • argo-workflows< 3.6.10-r3
  • code-server< 4.102.1-r0
  • code-server-compat< 4.102.1-r0
Wolfi25 products
  • argo-workflows< 3.6.10-r3
  • code-server< 4.102.1-r0
  • code-server-compat< 4.102.1-r0
  • json-server< 0.17.4-r2
  • katib-earlystopping< 0.19.0-r31
Debian1 product
  • node-on-headersAll versions (No fix recorded) | < 1.0.2-4
Jshttp1 product
Npm1 product
  • on-headers< 1.1.0
Ubuntu1 product
  • node-on-headersAll versions (No fix recorded)

6 vendors · 84 products

References

11 links
Show all 11 references