5.9

CVE-2026-116689: follow-redirects: Cross-realm sensitiveHeaders arrays are discarded and custom credentials can follow redirects

Deferred
AliasesDEBIAN-CVE-2026-116689UBUNTU-CVE-2026-116689GHSA-mrwp-f3q8-3g9p
Published 27-10-2026Last modified 30-10-2026

Vulnerability summary

CVE-2026-116689 is a medium (CVSS 5.9) vulnerability in follow-redirects. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.8% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.27%
0%100%
Low · Change unavailable
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 27-10-2026
    PublishedVulnerability first disclosed.
  2. 30-10-2026
    Last modifiedVulnerability information updated.

Description

follow-redirects is a Node.js HTTP and HTTPS client wrapper that automatically follows redirects. From 1.16.0 until 1.16.2, the documented sensitiveHeaders option is checked with value instanceof Array, so an array created in another JavaScript realm is replaced with an empty list even though Array.isArray recognizes it. When a request then follows an attacker-controlled cross-origin redirect, a custom credential header named in that discarded list can be forwarded to the redirect destination. This issue is fixed in version 1.16.2.

CVSS metrics

8 scores · 7 sources · 2 versions

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

19%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

28-10-202603-11-2026

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.

Chainguard45 products
  • arangodb-3.11All versions (No fix recorded) | < 3.11.14.6-r4
  • azuriteAll versions (No fix recorded) | < 3.37.0-r12
  • code-serverAll versions (No fix recorded) | < 4.144.0-r1
  • configurable-http-proxy< 5.3.0-r4
  • gitlab-rails-ce-19.2All versions (No fix recorded)
Wolfi8 products
  • code-serverAll versions (No fix recorded) | < 4.144.0-r1
  • configurable-http-proxy< 5.3.0-r4
  • jitsucom-jitsu-consoleAll versions (No fix recorded) | < 2.11.0-r42
  • kubeflow-pipelines-frontendAll versions (No fix recorded) | < 2.18.0-r2
  • lernaAll versions (No fix recorded) | < 10.1.1-r4
Debian1 product
  • node-follow-redirectsAll versions (No fix recorded)
Follow-redirects1 product
Npm1 product
  • follow-redirects≥ 1.16.0, < 1.16.2
Ubuntu1 product
  • node-follow-redirectsAll versions (No fix recorded)

6 vendors · 57 products

References

9 links