OpenClaw: LINE webhook handler lacks shared pre-auth concurrency budget before signature verification

CVE-2026-41343 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Summary

LINE webhook handler lacks shared pre-auth concurrency budget before signature verification

Current Maintainer Triage

  • Status: open
  • Normalized severity: low
  • Assessment: Shipped v2026.3.28 lacks a shared pre-auth concurrency budget on the public LINE webhook path, but the effect is bounded transient availability loss only, so low fits.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Latest published npm version: 2026.3.31
  • Vulnerable version range: <=2026.3.28
  • Patched versions: >= 2026.3.31
  • First stable tag containing the fix: v2026.3.31

Fix Commit(s)

  • 57c47d8c7fbf5a2e70cc4dec2380977968903cad — 2026-03-31T19:34:25+09:00

OpenClaw thanks @nexrin for reporting.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2026-04-02 21:01:08 UTC
Updated
2026-05-06 23:24:58 UTC
GitHub reviewed
2026-04-02 21:01:08 UTC

EPSS Score

Score Percentile
0.14% 34.42%

CVSS Scores

Base score Version Severity Vector
5.3 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
6.9 4.0 —
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:N)
No privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:N)
No integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:L)
Limited availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.

Identifiers

Type Value
GHSA GHSA-qcc3-jqwp-5vh2 ↗
CVE CVE-2026-41343 ↗

CWEs

CWE id Name
CWE-770 Allocation of Resources Without Limits or Throttling
CWE-799 Improper Control of Interaction Frequency

Credits

  • nexrin (reporter)
  • KeenSecurityLab (sponsor)
  • qclawer (sponsor)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
npm openclaw <= 2026.3.28 2026.3.31 —

References

cvelogic Threat Intelligence