5.3

CVE-2026-39825: go standard library net/http/httputil

CVSS: 5.3v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-39825DEBIAN-CVE-2026-39825CGA-2235-9jxp-3x2x
Published 07-05-2026Last modified 08-05-2026
Open JSON

Vulnerability summary

CVE-2026-39825 is a medium (CVSS 5.3) vulnerability in go standard library net/http/httputil. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 34.3% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.41%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 16 · Related 17
OPENSUSE-SU-2026:10723-1OPENSUSE-SU-2026:10741-1OPENSUSE-SU-2026:21254-1OPENSUSE-SU-2026:21319-1OPENSUSE-SU-2026:21483-1RHSA-2026:22112

Timeline

  1. 07-05-2026
    PublishedVulnerability first disclosed.
  2. 08-05-2026
    Last modifiedVulnerability information updated.

Description

ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query "a1=x&a2=x&...&a10000=x&hidden=y" can forward the parameter "hidden=y" while hiding it from the proxy's Rewrite function.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

+0.02 pp

From 0.39% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.41%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Chainguard200 products
  • aactl< 0.4.12-r51 | < 0.4.12-r50
  • actAll versions (No fix recorded)
  • actions-runner-controller-fips< 0.14.1-r2 | < 0.14.1-r1 | All versions (No fix recorded)
  • addon-resizerAll versions (No fix recorded)
  • addon-resizer-fipsAll versions (No fix recorded)

1 vendor · 200 products · Showing 200 of 3260. Use Open JSON for the complete list.

References

12 links
Show all 12 references