Uncontrolled recursion in stepancheg protobuf
Priority LOW 27CWE-674Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 7 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-674.
Summary
The protobuf crate before 3.7.2 for Rust allows uncontrolled recursion in the protobuf::coded_input_stream::CodedInputStream::skip_group parsing of unknown fields in untrusted input.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00473 41st percentileScored 2026-11-07
Fix Partial protobuf (stepancheg): 3.7.2protobuf (crates.io): 3.7.2Red Hat: 7 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| stepancheg | protobuf | before 3.7.2 | 3.7.2 | Patch available | CNA |
| — | protobuf (crates.io) | before 3.7.2 | 3.7.2 | Patch available | GHSA-2gh3-rmm4-6rq5 |
- protobuf Vendorstepancheg Affected before 3.7.2 Fixed in 3.7.2 Patch available CNA
- protobuf (crates.io) Vendor— Affected before 3.7.2 Fixed in 3.7.2 Patch available GHSA-2gh3-rmm4-6rq5
Remediation
- Fix · CNA protobuf (stepancheg) Fixed in 3.7.2
- Fix · GHSA-2gh3-rmm4-6rq5 protobuf (crates.io) Fixed in 3.7.2 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| OpenShift Service Mesh 3 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 16.2 | Affected | No fix planned: Out of support scope |
| Red Hat Trusted Profile Analyzer | Affected | No fix planned: Will not fix |
Not affected: 4 products
- Red Hat AMQ Clients
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2025-53605
- 2026-10-03 Alias added: GHSA-2gh3-rmm4-6rq5
References
Other 6
- https://github.com/stepancheg/rust-protobuf/issues/749
- https://rustsec.org/advisories/RUSTSEC-2024-0437
- https://crates.io/crates/protobuf
- https://github.com/stepancheg/rust-protobuf/commit/f06992f46771c0a092593b9ebf7afd48740b3ed6
- https://github.com/stepancheg/rust-protobuf
- https://rustsec.org/advisories/RUSTSEC-2024-0437.html
Sources
- CVE-2025-53605 · CVE Program
- CVE-2025-53605 · NVD
- FIRST EPSS
- GHSA-2gh3-rmm4-6rq5 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-53605 · Red Hat security data · CC BY 4.0
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