CVE-2026-41645

MEDIUMNVD 5.35.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.4% (37th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
5.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From version 3.0.0 to before version 3.8.0, a vulnerability in Nuclei's expression evaluation engine makes it possible for a malicious target server to inject and execute supported DSL expressions. This happens when HTTP response data containing helper/function syntax gets reused by multi-step templates. If the -env-vars / -ev option is explicitly enabled, this can expose host environment variables. That option is off by default, so standard configurations are not affected by the information disclosure risk. This issue has been patched in version 3.8.0.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity53% × 45%
The EG Score, 5.3 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
37th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

May 8, 2026

Last Modified

May 8, 2026

Advisory Details (6)

Auto-updated May 8, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

Environment variable disclosure via Response-Derived DSL Expressions · Advisory · projectdiscovery/nuclei · GitHub

https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-jm34-66cf-qpvr
Web page

Release v3.8.0 · projectdiscovery/nuclei · GitHub

https://github.com/projectdiscovery/nuclei/releases/tag/v3.8.0
Web page

fix(expressions): avoid helper eval in literal checks by dwisiswant0 · Pull Request #7321 · projectdiscovery/nuclei · GitHub

https://github.com/projectdiscovery/nuclei/pull/7321
Web page

fix(expressions): only eval template-authored expressions by dwisiswant0 · Pull Request #7221 · projectdiscovery/nuclei · GitHub

https://github.com/projectdiscovery/nuclei/pull/7221
Web page

fix(expressions): only eval template-authored expressions (#7221) · projectdiscovery/nuclei@d221732 · GitHub

https://github.com/projectdiscovery/nuclei/commit/d2217320162d5782ca7cb95bef9dda17063818f3
Web page

fix(expressions): avoid helper eval in literal checks (#7321) · projectdiscovery/nuclei@6c803c7 · GitHub

https://github.com/projectdiscovery/nuclei/commit/6c803c74d193f85f8a6d9803ce493fd302cad0eb

Affected Packages

(3 across 1 ecosystem)
Go(3)
PackageVulnerable rangeFix by version rangeDependents
github.com/projectdiscovery/nuclei—
  • every version on: no fix on record
—
github.com/projectdiscovery/nuclei/v2—
  • every version on: no fix on record
—
github.com/projectdiscovery/nuclei/v3—
  • 3.0.0 up to 3.8.0: fixed in 3.8.0
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 27× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 182 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 83 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  2. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  3. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  4. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  6. 2026-10-12 16:08 UTCEG score recompute
  7. 2026-10-11 19:50 UTCEG score recompute
  8. 2026-10-11 17:04 UTCEG score recompute
  9. 2026-10-11 14:30 UTCEG score recompute
  10. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  11. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  12. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  13. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  15. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  16. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  18. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  19. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  21. 2026-09-30 08:28 UTCOSV refresh
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  23. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  24. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  25. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 28th percentile
Show 74 more
  1. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  2. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  3. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  4. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  5. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  6. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  7. 2026-09-11 15:10 UTCOSV refresh
  8. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  9. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  10. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  11. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  12. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  13. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  14. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  15. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  16. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  17. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  18. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  19. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  20. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  21. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  22. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  23. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  24. 2026-08-23 19:30 UTCEG score recompute
  25. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  26. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  27. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  28. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  29. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  30. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  31. 2026-08-17 11:59 UTCEG score recompute
  32. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  33. 2026-08-16 04:41 UTCEG score recompute
  34. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  35. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  36. 2026-08-14 03:16 UTCEG score recompute
  37. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  38. 2026-08-13 00:01 UTCEG score recompute
  39. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  40. 2026-08-12 00:42 UTCEG score recompute
  41. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  42. 2026-08-11 01:23 UTCEG score recompute
  43. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  44. 2026-08-10 01:46 UTCEG score recompute
  45. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  46. 2026-08-09 02:27 UTCEG score recompute
  47. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  48. 2026-08-07 20:51 UTCEG score recompute
  49. 2026-08-06 21:31 UTCEG score recompute
  50. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  51. 2026-08-05 22:12 UTCEG score recompute
  52. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  53. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  54. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  55. 2026-08-04 03:16 UTCEG score recompute
  56. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  57. 2026-08-02 04:25 UTCEG score recompute
  58. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  59. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  60. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  61. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  62. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  63. 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  64. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  65. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  66. 2026-07-24 14:17 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  67. 2026-07-23 14:18 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  68. 2026-07-23 03:11 UTCEG score recompute
  69. 2026-07-22 14:08 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  70. 2026-07-21 15:24 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  71. 2026-07-20 17:08 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  72. 2026-07-19 14:31 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  73. 2026-07-19 02:29 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  74. 2026-07-18 10:04 UTCEPSS rescoreEPSS 0.3% · 26th percentile

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Frequently asked(5)

What is CVE-2026-41645?
CVE-2026-41645 is a medium-severity vulnerability; its CVE record was published on May 8, 2026. Nuclei is a vulnerability scanner built on a simple YAML-based DSL. From version 3.0.0 to before version 3.8.0, a vulnerability in Nuclei's expression evaluation engine makes it possible for a malicious target server to inject and execute supported DSL expressions. This happens when HTTP response…
When was the CVE record for CVE-2026-41645 published?
The CVE record for CVE-2026-41645 was published on May 8, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of May 8, 2026; the record at its source may have been updated since.
Is CVE-2026-41645 actively exploited?
CVE-2026-41645 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-41645?
CVE-2026-41645 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-41645?
A fix for CVE-2026-41645 is available: update to the fixed version the vendor names in its advisory.

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