CVE-2026-6409 (GCVE-0-2026-6409)
Vulnerability from cvelistv5
Published
2026-04-16 14:30
Modified
2026-04-16 15:24
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper input validation
Summary
A Denial of Service (DoS) vulnerability exists in the Protobuf PHP library during the parsing of untrusted input. Maliciously structured messages—specifically those containing negative varints or deep recursion—can be used to crash the application, impacting service availability.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Protocol Buffers | Protobuf-php (Pecl) |
Version: 0 ≤ Version: 0 ≤ |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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