EUVD-2026-72527
GHSA-4hff-3256-7fpc
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Reachable over any HTTP/2 port with no credentials; impact is availability-only from unbounded heap growth, no confidentiality or integrity impact.
Primary rating from Vendor (vendor:alpine).
CVSS VectorVendor: vendor:alpine
Lifecycle Timeline
7DescriptionCVE.org
Alpine Linux: perl-protocol-http2 fixed in 1.14-r0
AnalysisAI
Unbounded memory growth in the Protocol::HTTP2 Perl library (versions prior to 1.14) allows a remote unauthenticated attacker to exhaust server memory by cycling large numbers of HTTP/2 streams. The library's stream-state tracker accumulated closed-stream records indefinitely with no eviction, enabling a slow-burn denial-of-service attack against any application embedding this module as its HTTP/2 implementation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions - remote unauthenticated exploitation is possible against any service exposing an HTTP/2 endpoint (ALPN h2 on TLS port 443 or plaintext h2c on port 80) that embeds Protocol::HTTP2 prior to version 1.14. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | Real-world risk is moderate despite a CVSS 7.5 base score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary fix is to upgrade Protocol::HTTP2 to version 1.14 or later. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all applications and systems running Protocol::HTTP2 Perl library versions prior to 1.14 through dependency scanning and package audits. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-401 – Memory Leak
View allSame technique Denial Of Service
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External POC / Exploit Code
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