Improper Input ValidationWeakness · CWE-20

CVE-2025-62162

HIGH · 7.5 CVSS v3.1 Published 2025-10-10
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
cel-rust is a Common Expression Language interpreter written in Rust. Starting in version 0.10.0 and prior to version 0.11.4, parsing certain malformed CEL expressions can cause the parser to panic, terminating the process. When the crate is used to evaluate untrusted expressions (e.g., user-supplied input over an API), an attacker can send crafted input to trigger a denial of service (DoS). Version 0.11.4 fixes the issue.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

The cel-rust library (Common Expression Language interpreter in Rust) has a denial-of-service vulnerability where parsing malformed CEL expressions triggers a parser panic, causing process termination. Attackers can exploit this by supplying crafted malicious input to APIs that evaluate user-supplied CEL expressions.

MitigationUpgrade cel-rust to version 0.11.4 or later. If upgrade is not immediately possible, implement input validation and rate limiting on endpoints that evaluate CEL expressions to reduce DoS exposure.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify cel-rust library version
    Search your dependency files (Cargo.toml, Cargo.lock) or installed package listings for the cel-rust or cel-parser crate and note its version number
    Affected if The installed version is lower than 0.11.4 (e.g., 0.11.3, 0.11.2, etc.)
  2. Locate CEL expression evaluation code
    Search your codebase for imports of cel-rust crates and calls to expression evaluation functions such as cel::evaluate, parser::parse, or similar CEL evaluation APIs
    Affected if Your application calls CEL evaluation functions on user-supplied input without sanitization
  3. Identify user-facing endpoints
    Review your API endpoints or functions that accept CEL expressions from external sources (HTTP requests, CLI arguments, database fields, message queues)
    Affected if Untrusted users or external systems can submit CEL expressions to your service
  4. Check for input validation
    Examine the CEL evaluation code path for validation logic that filters or rejects malformed expressions before parsing
    Affected if No input validation exists on CEL expression input before it reaches the parser
  5. Verify rate limiting or throttling
    Check if rate limiting, timeouts, or resource constraints are applied to endpoints that process CEL expressions
    Affected if No rate limiting or execution timeout is configured for CEL expression evaluation

You are affected if your environment runs cel-rust version below 0.11.4 AND accepts CEL expressions from untrusted sources without input validation or rate limiting.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade cel-rust to version 0.11.4 or later. If upgrade is not immediately possible, implement input validation and rate limiting on endpoints that evaluate CEL expressions to reduce DoS exposure.

Recommended fix High confidence

0.11.4

  1. Update the cel-rust dependency in your Cargo.toml to version 0.11.4 or later
  2. Run `cargo update` or `cargo upgrade cel-runtime` to fetch the fixed version
  3. Rebuild and test your application to ensure the update doesn't break existing functionality
  4. Redeploy your service with the updated dependency
Caveat Review cel-rust changelog between your current version and 0.11.4 for any API changes

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing4.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,160
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-62162 in production — separate from our analysis above.

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