7.5

CVE-2026-78667: go standard library net/http

CVSS: 7.5v3.1HighAwaiting analysis
AliasesUBUNTU-CVE-2026-78667DEBIAN-CVE-2026-78667CGA-22c3-jhvv-pqh7
Published 08-10-2026Last modified 09-10-2026
Open JSON

Vulnerability summary

CVE-2026-78667 is a high (CVSS 7.5) vulnerability in go standard library net/http. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.7% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.38%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 10
MGASA-2026-0497OPENSUSE-SU-2026:12093-1OPENSUSE-SU-2026:12101-1OPENSUSE-SU-2026:12112-1OPENSUSE-SU-2026:22093-1OPENSUSE-SU-2026:22095-1

Timeline

  1. 08-10-2026
    PublishedVulnerability first disclosed.
  2. 09-10-2026
    Last modifiedVulnerability information updated.

Description

When parsing a Range header containing a large number of small ranges, FileServer(FS), ServeContent, and ServeFile(FS) can consume an excessive amount of CPU.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

09-10-202622-10-2026
EPSS score
0.38%

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

Affected systems

Chainguard200 products
  • aactl< 0.4.12-r79
  • access-log-exporter-fipsAll versions (No fix recorded)
  • acm-controller-fipsAll versions (No fix recorded)
  • actions-runner-controllerAll versions (No fix recorded)
  • actions-runner-controller-fipsAll versions (No fix recorded)

1 vendor · 200 products · Showing 200 of 4058. Use Open JSON for the complete list.

References

10 links