CVE-2026-42842

MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.4 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 95% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

The form plugin for Grav adds the ability to create and use forms. Prior to 9.1.0, a Stored Cross-Site Scripting (XSS) vulnerability exists in the Grav CMS Form plugin's select field template. Taxonomy tag and category values are rendered with the Twig |raw filter in the admin panel, bypassing the global autoescape protection. An editor-level user can inject arbitrary JavaScript that executes in any administrator's browser session when they view or edit any page in the admin panel. This vulnerability is fixed in 9.1.0.

CVSS v3
5.4
EG Score
5.4(medium)
EPSS
4.6%
KEV
Not listed

Published

May 11, 2026

Last Modified

May 13, 2026

Advisory Details (2)

Auto-updated May 11, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

XSS via Taxonomy Field Values in Admin Panel · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-c2q3-p4jr-c55f
generic

[security] Drop |raw on select option text (GHSA-c2q3-p4jr-c55f) · getgrav/grav-plugin-form@6bffb4c · GitHub

https://github.com/getgrav/grav-plugin-form/commit/6bffb4c98be468a155d1656544ec45bb4a443957

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
getgrav/grav0.8.0 ... 2.0.0-beta.1 (317 versions)2.0.0-beta.2—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 38× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:16 UTCEPSS rescore
  4. 2026-07-07 13:46 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 06:31 UTCEPSS rescore
  9. 2026-07-01 15:06 UTCEPSS rescore
  10. 2026-06-30 23:22 UTCEPSS rescore
  11. 2026-06-29 14:06 UTCEPSS rescore
  12. 2026-06-28 14:07 UTCEPSS rescore
  13. 2026-06-28 04:56 UTCEPSS rescore
  14. 2026-06-27 09:53 UTCEG score recompute
  15. 2026-06-27 03:08 UTCEPSS rescore
  16. 2026-06-26 05:07 UTCEG score recompute
  17. 2026-06-25 13:49 UTCEPSS rescore
  18. 2026-06-25 13:49 UTCEPSS rescore
  19. 2026-06-24 14:05 UTCEPSS rescore
  20. 2026-06-23 21:33 UTCEPSS rescore
  21. 2026-06-22 14:25 UTCEPSS rescore
  22. 2026-06-22 14:25 UTCEPSS rescore
  23. 2026-06-21 14:56 UTCEPSS rescore
  24. 2026-06-21 14:56 UTCEPSS rescore
  25. 2026-06-21 01:59 UTCEPSS rescore
Show 61 more
  1. 2026-06-19 19:25 UTCEPSS rescore
  2. 2026-06-18 17:52 UTCEPSS rescore
  3. 2026-06-18 17:52 UTCEPSS rescore
  4. 2026-06-17 17:53 UTCEPSS rescore
  5. 2026-06-16 17:52 UTCEPSS rescore
  6. 2026-06-16 07:26 UTCEG score recompute
  7. 2026-06-15 17:49 UTCEPSS rescore
  8. 2026-06-15 02:55 UTCEG score recompute
  9. 2026-06-14 01:57 UTCEG score recompute
  10. 2026-06-13 23:00 UTCEPSS rescore
  11. 2026-06-12 23:12 UTCEPSS rescore
  12. 2026-06-12 23:12 UTCEPSS rescore
  13. 2026-06-12 17:57 UTCEG score recompute
  14. 2026-06-11 17:02 UTCEG score recompute
  15. 2026-06-11 14:00 UTCEPSS rescore
  16. 2026-06-10 22:18 UTCEPSS rescore
  17. 2026-06-10 15:26 UTCEG score recompute
  18. 2026-06-10 13:22 UTCEPSS rescore
  19. 2026-06-10 13:22 UTCEPSS rescore
  20. 2026-06-09 14:31 UTCEG score recompute
  21. 2026-06-08 14:17 UTCEPSS rescore
  22. 2026-06-08 14:17 UTCEPSS rescore
  23. 2026-06-08 13:35 UTCEG score recompute
  24. 2026-06-07 15:25 UTCEPSS rescore
  25. 2026-06-07 15:25 UTCEPSS rescore
  26. 2026-06-07 12:39 UTCEG score recompute
  27. 2026-06-06 13:47 UTCEPSS rescore
  28. 2026-06-06 13:47 UTCEPSS rescore
  29. 2026-06-06 11:43 UTCEG score recompute
  30. 2026-06-05 22:47 UTCEPSS rescore
  31. 2026-06-05 10:47 UTCEG score recompute
  32. 2026-06-05 06:10 UTCEPSS rescore
  33. 2026-06-05 06:10 UTCEPSS rescore
  34. 2026-06-04 13:12 UTCEPSS rescore
  35. 2026-06-04 13:12 UTCEPSS rescore
  36. 2026-06-04 09:52 UTCEG score recompute
  37. 2026-06-03 08:56 UTCEG score recompute
  38. 2026-06-02 20:13 UTCEPSS rescore
  39. 2026-06-02 08:00 UTCEG score recompute
  40. 2026-06-01 13:52 UTCEPSS rescore
  41. 2026-06-01 13:52 UTCEPSS rescore
  42. 2026-06-01 07:04 UTCEG score recompute
  43. 2026-05-31 22:30 UTCEPSS rescore
  44. 2026-05-31 22:30 UTCEPSS rescore
  45. 2026-05-31 00:16 UTCEPSS rescore
  46. 2026-05-31 00:16 UTCEPSS rescore
  47. 2026-05-29 13:44 UTCEPSS rescore
  48. 2026-05-29 13:44 UTCEPSS rescore
  49. 2026-05-28 13:44 UTCEPSS rescore
  50. 2026-05-28 13:44 UTCEPSS rescore
  51. 2026-05-27 13:40 UTCEPSS rescore
  52. 2026-05-27 13:40 UTCEPSS rescore
  53. 2026-05-26 13:44 UTCEPSS rescore
  54. 2026-05-26 07:18 UTCEPSS rescore
  55. 2026-05-26 07:18 UTCEPSS rescore
  56. 2026-05-23 00:07 UTCEG score recompute
  57. 2026-05-20 22:38 UTCEPSS rescore
  58. 2026-05-20 22:38 UTCEPSS rescore
  59. 2026-05-20 13:16 UTCEG score recompute
  60. 2026-05-20 11:22 UTCEPSS rescore
  61. 2026-05-20 11:22 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42842?
CVE-2026-42842 is a medium vulnerability published on May 11, 2026. The form plugin for Grav adds the ability to create and use forms. Prior to 9.1.0, a Stored Cross-Site Scripting (XSS) vulnerability exists in the Grav CMS Form plugin's select field template. Taxonomy tag and category values are rendered with the Twig |raw filter in the admin panel, bypassing the…
When was CVE-2026-42842 disclosed?
CVE-2026-42842 was first published in the National Vulnerability Database on May 11, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42842 actively exploited?
CVE-2026-42842 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42842?
CVE-2026-42842 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-42842?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42842, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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