CVE-2026-55530Public exploit

Arbitrary file rewrite via missing approval gate

Published Aug 25, 2026 · Updated Aug 25, 2026

Missing authorization in PraisonAI before 4.6.58 and praisonaiagents before 1.6.58 allows attackers to rewrite writable files. The ast_grep_rewrite tool passes agent-controlled pattern, replacement, and path values to ast-grep with --update-all but lacks the approval decorator and workspace path validation used by sibling mutation tools. Reachability requires an operator to run an agent with the code_intelligence tool surface and accept attacker-influenced input; modified imported or executed files can lead to code execution.

CVSS severity6.1
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in PraisonAI before 4.6.58 and praisonaiagents before 1.6.58 allows attackers to rewrite writable files. The ast_grep_rewrite tool passes agent-controlled pattern, replacement, and path values to ast-grep with --update-all but lacks the approval decorator and workspace path validation used by sibling mutation tools. Reachability requires an operator to run an agent with the code_intelligence tool surface and accept attacker-influenced input; modified imported or executed files can lead to code execution.

The record

CVE
CVE-2026-55530
Published
Aug 25, 2026
Updated
Aug 25, 2026
Vendor
Mervin Praison
Product
PraisonAI
Classifications
CWE-862, T1565.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.6.58

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Mervin Praison · PraisonAIversion=< 4.6.58
Mervin Praison · praisonaiagentsversion=< 1.6.58

Published CVSS scores

6.1GitHubCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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