CVE-2025-47910: CrossOriginProtection insecure bypass patterns not limited to exact matches in net/http
Vulnerability summary
CVE-2025-47910 is a medium (CVSS 5.4) vulnerability in go standard library net/http. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 28.2% of scored vulnerabilities.
Not severe (CVSS 5.4, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 88Timeline
- 22-09-2025PublishedVulnerability first disclosed.
- 24-09-2025Last modifiedVulnerability information updated.
Description
When using http.CrossOriginProtection, the AddInsecureBypassPattern method can unexpectedly bypass more requests than intended. CrossOriginProtection then skips validation, but forwards the original request path, which may be served by a different handler without the intended security protections.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.4MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- OSV · DebianEcosystem advisory · calculated5.4MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- NVDNIST5.4MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- OSV · AlpineEcosystem advisory · calculated5.4MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
EPSS trend
Probability
0.35%
Chance of exploitation in the next 30 days
Percentile
28%
Versus all other CVEs
30-day change
Increase +0.02 pp
From 0.33% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard199 products
- aactl< 0.4.12-r36
- amazon-cloudwatch-agent-operator< 3.2.0-r0
- amazon-cloudwatch-agent-operator-compat< 3.2.0-r0
- apm-server-8.17< 8.17.10-r1
- apm-server-8.17-compat< 8.17.10-r1
Alpine1 product
- go< 1.25.1-r0
2 vendors · 200 products · Showing 200 of 1076
References
16 links- go.dev/issue/75054REPORT