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[UPDATE] [medium] nghttp2: Vulnerability allows data manipulation

mediumCVE-2026-58055
A remote, anonymous attacker can exploit a vulnerability in nghttp2 to manipulate data.

CSIRTS triage

vendor: nghttp2product: nghttp2Other
What
A vulnerability in nghttp2 allows for data manipulation.
Who is affected
Remote, anonymous users of nghttp2 are affected.
Urgency
Remediation is medium urgency due to the potential for exploitation and medium severity.
Action
Monitor for updates and apply patches when available.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity
medium
Published
2026-07-03
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2110

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-58055coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for nghttp2

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-Bund (BSI) Security Advisories