CVE-2026-61457

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory published 2026-07-15. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: Elevated riskExposed: 0

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

The Grav API plugin (getgrav/grav-plugin-api) before 1.0.3 contains a file upload extension bypass in the API media controller. HandlesMediaUploads::validateFileExtension() inspects only the final file extension via pathinfo($filename, PATHINFO_EXTENSION), so a user with api.media.write permission can upload a file with a double extension such as shell.php.jpg to bypass the dangerous extensions blocklist. The web server may then execute the file as PHP, resulting in remote code execution.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: Track*

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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
56%
KEV
Not listed

Published

July 15, 2026

Last Modified

July 28, 2026

Advisory Details (2)

Auto-updated Jul 15, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Grav before 1.0.3 Remote Code Execution via File Upload Extension Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-before-remote-code-execution-via-file-upload-extension-bypass
github Patch Available🟡 PoC Available

File Upload Extension Bypass in API Media Controller · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-66v2-vxxf-xc3v

Vendor Advisories for CVE-2026-61457(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 55× 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 183 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-61457?
CVE-2026-61457 is a high vulnerability published on July 15, 2026. The Grav API plugin (getgrav/grav-plugin-api) before 1.0.3 contains a file upload extension bypass in the API media controller. HandlesMediaUploads::validateFileExtension() inspects only the final file extension via pathinfo($filename, PATHINFO_EXTENSION), so a user with api.media.write permission…
When was CVE-2026-61457 disclosed?
CVE-2026-61457 was first published in the National Vulnerability Database on July 15, 2026, with the most recent update on July 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-61457 actively exploited?
CVE-2026-61457 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 43.9% of all scored CVEs.
What is the CVSS score of CVE-2026-61457?
CVE-2026-61457 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-61457?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-61457, 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

Explore the affected products and dependency analysis for CVE-2026-61457

Explore →

Is Your Infrastructure Affected by CVE-2026-61457?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs