CVE-2026-92718: Improper Verification of Cryptographic Signature in projectdiscovery nuclei
Nuclei versions before 3.11.1 have an improper verification of cryptographic signatures where template verification relies solely on file modification time without validating content checksums. This allows attackers to replace verified templates with malicious unsigned content and restore the original modification time to bypass signature checks, potentially leading to arbitrary operating system command execution.
AI Analysis
Technical Summary
CVE-2026-92718 affects projectdiscovery's nuclei tool versions >=3.7.0 and <3.11.1. The vulnerability arises because the software caches template signature verification based only on file modification timestamps, omitting content checksum validation. An attacker can exploit this by substituting a verified template with a malicious unsigned one and resetting the file's modification time to the original value, thereby bypassing signature verification. This can result in execution of arbitrary OS commands under the privileges of the user running nuclei.
Potential Impact
Successful exploitation allows an attacker with local or limited privileges to execute arbitrary operating system commands by bypassing signature verification of templates. This undermines the integrity of the template verification process and can lead to system compromise or unauthorized actions performed by nuclei.
Mitigation Recommendations
Upgrade nuclei to version 3.11.1 or later, where this vulnerability is fixed. Versions before 3.11.1 are affected. No official patch links were provided in the input, but the vendor advisory should be consulted for the official fix. Until upgrading, avoid using untrusted templates and verify template integrity manually if possible.
CVE-2026-92718: Improper Verification of Cryptographic Signature in projectdiscovery nuclei
Description
Nuclei versions before 3.11.1 have an improper verification of cryptographic signatures where template verification relies solely on file modification time without validating content checksums. This allows attackers to replace verified templates with malicious unsigned content and restore the original modification time to bypass signature checks, potentially leading to arbitrary operating system command execution.
CVSS v4.0
Score 7.0high
Affected software
projectdiscovery
nuclei
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-92718 affects projectdiscovery's nuclei tool versions >=3.7.0 and <3.11.1. The vulnerability arises because the software caches template signature verification based only on file modification timestamps, omitting content checksum validation. An attacker can exploit this by substituting a verified template with a malicious unsigned one and resetting the file's modification time to the original value, thereby bypassing signature verification. This can result in execution of arbitrary OS commands under the privileges of the user running nuclei.
Potential Impact
Successful exploitation allows an attacker with local or limited privileges to execute arbitrary operating system commands by bypassing signature verification of templates. This undermines the integrity of the template verification process and can lead to system compromise or unauthorized actions performed by nuclei.
Mitigation Recommendations
Upgrade nuclei to version 3.11.1 or later, where this vulnerability is fixed. Versions before 3.11.1 are affected. No official patch links were provided in the input, but the vendor advisory should be consulted for the official fix. Until upgrading, avoid using untrusted templates and verify template integrity manually if possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-16T17:20:10.490Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aaad61e55bf5e2cf5f51409
Added to database: 09/16/2026, 17:47:10 UTC
Last enriched: 09/16/2026, 18:01:36 UTC
Last updated: 09/16/2026, 18:16:09 UTC
Views: 7
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