How severe is GHSA-vc3p-29h2-gpcp?

GHSA-vc3p-29h2-gpcp has a CVSS score of 7.5/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by GHSA-vc3p-29h2-gpcp?

GHSA-vc3p-29h2-gpcp affects the following packages: golang.org/x/net/http2 (Go). Ecosystems affected: Go.

How do I fix GHSA-vc3p-29h2-gpcp?

Update golang.org/x/net/http2 to 0.0.0-20211209124913-491a49abca63 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vc3p-29h2-gpcp is resolved across your whole dependency graph.

How do I detect GHSA-vc3p-29h2-gpcp in my Go dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for golang.org/x/net/http2. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

How do I mitigate GHSA-vc3p-29h2-gpcp if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-vc3p-29h2-gpcp?

O3 pinpoints whether GHSA-vc3p-29h2-gpcp is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-vc3p-29h2-gpcp actively exploited in the wild?

No public exploit code has been indexed for GHSA-vc3p-29h2-gpcp yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-vc3p-29h2-gpcp?

GHSA-vc3p-29h2-gpcp has an EPSS (Exploit Prediction Scoring System) score of 4.0%, placing it in the 89th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-vc3p-29h2-gpcp?

GHSA-vc3p-29h2-gpcp is classified as Uncontrolled Resource Consumption (CWE-400). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-vc3p-29h2-gpcp published, and has it been updated?

GHSA-vc3p-29h2-gpcp was published on January 2, 2022 and was last updated on December 6, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🐹 Go

GHSA-vc3p-29h2-gpcp

HIGH

golang.org/x/net/http2 allows uncontrolled memory consumption

Also known asBIT-golang-2021-44716CVE-2021-44716GO-2022-0288

Published

Jan 2, 2022

Updated

Dec 6, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

EPSS Exploitation Probability

via FIRST.org ↗

4.0%probability of exploitation in next 30 days

Lower Risk89th percentile+3.87%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected

🐹golang.org/x/net/http2

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.

Description

net/http in Go before 1.16.12 and 1.17.x before 1.17.5 allows uncontrolled memory consumption in the header canonicalization cache via HTTP/2 requests.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🐹Go	`golang.org/x/net/http2`	all versions	0.0.0-20211209124913-491a49abca63

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for golang.org/x/net/http2. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update golang.org/x/net/http2 to 0.0.0-20211209124913-491a49abca63 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vc3p-29h2-gpcp is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-vc3p-29h2-gpcp is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-vc3p-29h2-gpcp. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

net/http in Go before 1.16.12 and 1.17.x before 1.17.5 allows uncontrolled memory consumption in the header canonicalization cache via HTTP/2 requests.

O3 Security · Impact-Aware SCA

Is GHSA-vc3p-29h2-gpcp in your dependencies?

O3 detects GHSA-vc3p-29h2-gpcp across Go dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works