CVE-2024-27921

HIGHNVD 8.88.9▲
EchelonGraph scoreHIGH confidence

Score elevated to 8.9 because EPSS predicts 61% probability of exploitation within the next 30 days (99th percentile of EPSS-scored CVEs). NVD baseline CVSS 8.8 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction (continuous uplift above 30%)
Sources: epss, nvd
Weaponized
8.9EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 61%
  • Public exploit code is available (ssvc poc, epss top5pct, epss high)
CISA-KEV: Not listedEPSS PROB: 61%CVSS: 8.8Exploit: ssvc poc · epss top5pct · epss highExposed services: Not assessed

A fix is available — apply it.

Grav is an open-source, flat-file content management system. A file upload path traversal vulnerability has been identified in the application prior to version 1.7.45, enabling attackers to replace or create files with extensions like .json, .zip, .css, .gif, etc. This critical security flaw poses severe risks, that can allow attackers to inject arbitrary code on the server, undermine integrity of backup files by overwriting existing files or creating new ones, and exfiltrate sensitive data using CSS exfiltration techniques. Upgrading to patched version 1.7.45 can mitigate the issue.

CVSS v3
8.8
EG Score
8.9HIGHhigh confidence
EG Risk
66
EG Risk 66/100CISA SSVC

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
Severity89% × 45%
Exploitation65% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
61%
EPSS %ILE
99th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

March 21, 2024

Last Modified

January 2, 2025

Advisory Details (2)

Auto-updated Aug 24, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
githubMentions a patch (unverified)🟡 PoC Available

File Upload Path Traversal · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-m7hx-hw6h-mqmc
github_commit Patch Available

commit 5928411b86ba (getgrav/grav)

Patch available: getgrav/grav 2.0.0-rc.6 (contains commit 5928411b86ba)

https://github.com/getgrav/grav/commit/5928411b86bab05afca2b33db4e7386a44858e99

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
getgrav/grav0.8.0 ... 1.7.9 (275 versions)
  • every version up to 1.7.45: fixed in 1.7.45
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 23× 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.

Showing the most recent 100 of 148 total refreshes for this CVE.

  1. 2026-10-09 20:05 UTCEPSS rescore
  2. 2026-10-08 17:07 UTCEPSS rescore
  3. 2026-10-07 23:46 UTCEPSS rescore
  4. 2026-10-06 15:15 UTCEPSS rescore
  5. 2026-10-04 23:20 UTCEPSS rescore
  6. 2026-10-01 19:48 UTCEPSS rescore
  7. 2026-09-30 17:00 UTCEG score recompute
  8. 2026-09-30 15:01 UTCEPSS rescore
  9. 2026-09-26 15:57 UTCEPSS rescore
  10. 2026-09-26 00:23 UTCEPSS rescore
  11. 2026-09-24 14:01 UTCEPSS rescore
  12. 2026-09-23 13:46 UTCEPSS rescore
  13. 2026-09-23 13:46 UTCEPSS rescore
  14. 2026-09-22 14:46 UTCEPSS rescore
  15. 2026-09-22 05:16 UTCOSV refresh
  16. 2026-09-18 19:26 UTCEPSS rescore
  17. 2026-09-16 14:06 UTCEPSS rescore
  18. 2026-09-16 14:06 UTCEPSS rescore
  19. 2026-09-15 03:08 UTCEPSS rescore
  20. 2026-09-15 03:08 UTCEPSS rescore
  21. 2026-09-13 16:45 UTCEPSS rescore
  22. 2026-09-12 14:59 UTCEPSS rescore
  23. 2026-09-11 09:35 UTCEPSS rescore
  24. 2026-09-08 21:58 UTCEPSS rescore
  25. 2026-09-06 13:46 UTCEPSS rescore
Show 75 more
  1. 2026-09-06 13:46 UTCEPSS rescore
  2. 2026-09-05 15:26 UTCEPSS rescore
  3. 2026-09-04 13:58 UTCEPSS rescore
  4. 2026-09-03 02:30 UTCOSV refresh
  5. 2026-09-02 14:10 UTCEPSS rescore
  6. 2026-08-30 19:15 UTCEPSS rescore
  7. 2026-08-28 21:39 UTCEPSS rescore
  8. 2026-08-27 14:23 UTCEPSS rescore
  9. 2026-08-26 14:44 UTCEPSS rescore
  10. 2026-08-25 13:47 UTCEPSS rescore
  11. 2026-08-24 14:15 UTCEPSS rescore
  12. 2026-08-23 00:17 UTCEPSS rescore
  13. 2026-08-21 23:47 UTCEPSS rescore
  14. 2026-08-20 22:53 UTCEPSS rescore
  15. 2026-08-19 17:02 UTCEPSS rescore
  16. 2026-08-19 17:02 UTCEPSS rescore
  17. 2026-08-18 13:46 UTCEPSS rescore
  18. 2026-08-18 13:46 UTCEPSS rescore
  19. 2026-08-17 13:45 UTCEPSS rescore
  20. 2026-08-16 15:44 UTCOSV refresh
  21. 2026-08-16 02:13 UTCEPSS rescore
  22. 2026-08-15 01:28 UTCEPSS rescore
  23. 2026-08-13 21:59 UTCEPSS rescore
  24. 2026-08-12 13:49 UTCEPSS rescore
  25. 2026-08-11 13:40 UTCEPSS rescore
  26. 2026-08-07 16:25 UTCEPSS rescore
  27. 2026-08-06 13:45 UTCEPSS rescore
  28. 2026-08-05 19:16 UTCEPSS rescore
  29. 2026-08-01 09:36 UTCOSV refresh
  30. 2026-07-30 16:26 UTCEPSS rescore
  31. 2026-07-30 16:26 UTCEPSS rescore
  32. 2026-07-30 01:29 UTCEPSS rescore
  33. 2026-07-27 14:11 UTCEPSS rescore
  34. 2026-07-26 14:53 UTCEPSS rescore
  35. 2026-07-26 14:53 UTCEPSS rescore
  36. 2026-07-25 14:16 UTCEPSS rescore
  37. 2026-07-24 14:16 UTCEPSS rescore
  38. 2026-07-23 14:17 UTCEPSS rescore
  39. 2026-07-23 02:35 UTCEG score recompute▲ 0.10
  40. 2026-07-22 14:07 UTCEPSS rescore
  41. 2026-07-21 15:23 UTCEPSS rescore
  42. 2026-07-20 17:06 UTCEPSS rescore
  43. 2026-07-19 02:28 UTCEPSS rescore
  44. 2026-07-19 02:28 UTCEPSS rescore
  45. 2026-07-18 10:03 UTCEPSS rescore
  46. 2026-07-18 10:03 UTCEPSS rescore
  47. 2026-07-16 17:01 UTCEPSS rescore
  48. 2026-07-15 16:56 UTCEPSS rescore
  49. 2026-07-15 16:56 UTCEPSS rescore
  50. 2026-07-14 16:25 UTCOSV refresh
  51. 2026-07-13 22:28 UTCEPSS rescore
  52. 2026-07-13 06:11 UTCEPSS rescore
  53. 2026-07-12 05:45 UTCEPSS rescore
  54. 2026-07-11 08:26 UTCEPSS rescore
  55. 2026-07-11 08:26 UTCEPSS rescore
  56. 2026-07-09 19:09 UTCEPSS rescore
  57. 2026-07-06 16:26 UTCEPSS rescore
  58. 2026-07-06 16:26 UTCEPSS rescore
  59. 2026-07-05 02:29 UTCEPSS rescore
  60. 2026-07-04 06:30 UTCEPSS rescore
  61. 2026-07-02 17:00 UTCEPSS rescore
  62. 2026-07-01 15:05 UTCEPSS rescore
  63. 2026-06-28 04:55 UTCEPSS rescore
  64. 2026-06-28 04:55 UTCEPSS rescore
  65. 2026-06-27 03:07 UTCEPSS rescore
  66. 2026-06-27 03:07 UTCEPSS rescore
  67. 2026-06-26 17:09 UTCOSV refresh
  68. 2026-06-25 13:49 UTCEPSS rescore
  69. 2026-06-25 13:48 UTCEPSS rescore
  70. 2026-06-24 14:04 UTCEPSS rescore
  71. 2026-06-24 14:04 UTCEPSS rescore
  72. 2026-06-23 21:32 UTCEPSS rescore
  73. 2026-06-23 21:32 UTCEPSS rescore
  74. 2026-06-21 01:58 UTCEPSS rescore
  75. 2026-06-21 01:58 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2024-27921?
CVE-2024-27921 is a high vulnerability published on March 21, 2024. Grav is an open-source, flat-file content management system. A file upload path traversal vulnerability has been identified in the application prior to version 1.7.45, enabling attackers to replace or create files with extensions like .json, .zip, .css, .gif, etc. This critical security flaw poses…
When was CVE-2024-27921 disclosed?
CVE-2024-27921 was first published on March 21, 2024, with the most recent update on January 2, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-27921 actively exploited?
CVE-2024-27921 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model classifies it as weaponized: a functional public exploit exists. FIRST EPSS estimates a 61% probability of exploitation in the next 30 days (99th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-27921?
CVE-2024-27921 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.9 (HIGH).
How do I remediate CVE-2024-27921?
A fix for CVE-2024-27921 is available: update to the fixed version the vendor names in its advisory.

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