CVE-2022-30631 — Uncontrolled recursion in Reader

Uncontrolled recursion in Reader.Read in compress/gzip before Go 1.17.12 and Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via an archive containing a large number of concatenated 0-length compressed files.

01What is this vulnerability?

Uncontrolled recursion in Reader.Read in compress/gzip before Go 1.17.12 and Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via an archive containing a large number of concatenated 0-length compressed files.

02Affected products

Vendor	Product	Versions
Go standard library	compress/gzip	0, 1.18.0-0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-08-09T20:16:32.000Z
• Last modified: 2025-10-20T17:51:28.366Z

09References

• go.dev — https://go.dev/cl/417067
• go.googlesource.com — https://go.googlesource.com/go/+/b2b8872c876201eac2d0707276c6999ff3eb185e
• go.dev — https://go.dev/issue/53168
• groups.google.com — https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE
• pkg.go.dev — https://pkg.go.dev/vuln/GO-2022-0524