Answer in brief
CVE-2026-52721 records a Medium severity (CVSS 5.3) vulnerability in Gstreamer1-plugins-bad-free: gstreamer: multiple out-of-bounds reads in pcapparse ipv4/tcp header parsing. The current sources do not mark it as known exploited. The current feed maps Red Hat/gstreamer1-plugins-bad-free (generic), Red Hat/gstreamer-plugins-bad-free (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Red Hat/gstreamer1-plugins-bad-free (generic), Red Hat/gstreamer-plugins-bad-free (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/gstreamer1-plugins-bad-freegeneric | * | Not reported |
| Red Hat/gstreamer-plugins-bad-freegeneric | * | Not reported |
Published upstream
Jun 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 5, 2026
Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.
Quoted source text, attributed separately from HOL analysis.