Skip to content
Fencer Vulns
medium 4.0

CVE-2026-41282 json

Nuclei: Environment variable disclosure via Response-Derived DSL Expressions

published 2026-04-20 6 mo ago modified 2026-10-26 13 d ago also CVE-2026-41645 , GHSA-jm34-66cf-qpvr , GO-2026-5473 , EUVD-2026-23795

cvss
4.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

ProjectDiscovery Nuclei 3 before 3.8.0 allows DSL expression injection. This affects use of -env-vars for multi-step templates against untrusted targets (not the default configuration).

Patch / fix

  • go github.com/projectdiscovery/nuclei/v3 3.8.0
  • ProjectDiscovery Nuclei 3.8.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-41282 updated cvss 4.0

nuclei: github.com/projectdiscovery/nuclei: ProjectDiscovery Nuclei: DSL expression injection via environment variables in multi-step templates

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
6 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/projectdiscovery/nuclei/pull/7221 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/projectdiscovery/nuclei/pull/7321 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
go github.com/projectdiscovery/nuclei/v3
>=3.0.0, <3.8.0
3.8.0
go github.com/projectdiscovery/nuclei
all versions
 no fix listed
go github.com/projectdiscovery/nuclei/v2
all versions
 no fix listed

Affected products

  • ProjectDiscovery Nuclei

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.