CVE-2025-57801

Published Aug 22, 2025

Last updated 2 months ago

Overview

AI description

Automated description summarized from trusted sources.

CVE-2025-57801 refers to a vulnerability in Fiber, an Express-inspired web framework written in Go. Specifically, versions 2.52.8 and below are affected. The vulnerability occurs when using Fiber's Ctx.BodyParser to parse form data containing a large numeric key that represents a slice index. For example, a key like "test.18446744073704" could trigger the issue. The root cause is that the decoder attempts to allocate a slice of length idx + 1 without validating whether the index is within a safe or reasonable range. If the index is excessively large, this can lead to an integer overflow or memory exhaustion, causing a panic or crash. Version 2.52.9 addresses this vulnerability.

Description: gnark is a zero-knowledge proof system framework. In versions prior to 0.14.0, the Verify function in eddsa.go and ecdsa.go used the S value from a signature without asserting that 0 ≤ S < order, leading to a signature malleability vulnerability. Because gnark’s native EdDSA and ECDSA circuits lack essential constraints, multiple distinct witnesses can satisfy the same public inputs. In protocols where nullifiers or anti-replay checks are derived from R and S, this enables signature malleability and may allow double spending. This issue has been addressed in version 0.14.0.
Source: security-advisories@github.com
NVD status: Analyzed
Products: gnark

Risk scores

CVSS 4.0

Type: Secondary
Base score: 8.6
Impact score: -
Exploitability score: -
Vector string: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity: HIGH

CVSS 3.1

Type: Primary
Base score: 9.1
Impact score: 5.2
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Severity: CRITICAL

Weaknesses

security-advisories@github.com: CWE-347

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score: 10

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:consensys:gnark:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "CBDC4D7B-90D9-4551-889C-E82C0B2CD6E9",
            "versionEndExcluding": "0.14.0"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.