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Vulnerabilities

Vulnerability · CVE-2025-66843

grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality.

Published Dec 15, 2025 · catalog updated Oct 14, 2026 · grav before v1.7.49.5 has

Check if you run it

No confirmed exploitation is on record for CVE-2025-66843. EPSS is 0.16%. Act only if a listed version of grav before v1.7.49.5 has is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (grav before v1.7.49.5 has).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.16%
Remediation
Not established
Affected products
cpe getgrav/grav

grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the server and later executed when any other user views or edits the affected page.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe getgrav/gravversion unspecified

How to fix CVE-2025-66843

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-66843. EPSS is 0.16%. Act only if a listed version of grav before v1.7.49.5 has is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.16%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 15, 2025 · NIST NVD

    Detected

    grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the server and later executed when any other user views or edits the affected page.

  2. Oct 14, 2026 · NIST NVD

    Updated

    grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the server and later executed when any other user views or edits the affected page.

Sources

  • CVE.orgVulnerability recordCVE-2025-66843

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-66843

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2025-66843

    grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the s

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.