RCE in Golang Go
CVE-2023-29400
Templates containing actions in unquoted HTML attributes (e.g. "attr={{.}}") executed with empty input can result in output with unexpected results when parsed due to HTML normalization rules. This may allow injection of arbitrary attributes into tags.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.010 (62.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Golang Go
- Go Standard Library Html/template — versions 0, 1.20.0-0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- go.dev/issue/59722 (Patch, Issue Tracking)
- go.dev/cl/491617 (Patch)
- groups.google.com/g/golang-announce/c/MEb0UyuSMsU (Mailing List, Release Notes)
- pkg.go.dev/vuln/GO-2023-1753 (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-29400?
- CVE-2023-29400 is a high-severity vulnerability in Golang Go, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2023-05-11.
- How severe is CVE-2023-29400?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2023-29400 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.