CVE-2026-61690

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (43rd percentile of EPSS-scored CVEs). 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, secondary
Elevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Grav is a file-based Web platform. Prior to 2.0.1, Grav ZipArchiver::extract() in system/src/Grav/Common/Filesystem/ZipArchiver.php passes archives to ZipArchive::extractTo() without enforcing the system.gpm.archive uncompressed-size, file-count, or nesting-depth limits. Code using Archiver::create('zip') to extract an attacker-controlled archive can exhaust disk space or inodes and make the site unavailable. This issue is fixed in version 2.0.1.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
60
EG Risk 60/100CISA 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
Severity65% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
0.5%
EPSS %ILE
43rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

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 yes (CISA Vulnrichment) · Technical impact partial (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

August 19, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

2.0.1

Patch available: getgrav/grav 2.0.1

https://github.com/getgrav/grav/releases/tag/2.0.1
github_commit Patch Available

commit 1c1003cfcab5 (getgrav/grav)

Patch available: getgrav/grav 2.0.1 (contains commit 1c1003cfcab5)

https://github.com/getgrav/grav/commit/1c1003cfcab5344203d6fde1aaa1f9a4ee3413ff
githubMentions a patch (unverified)🟡 PoC Available

Decompression Bomb via ZipArchiver - Missing Extraction Limits · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-928x-9mpw-8h56

Vendor Advisories for CVE-2026-61690(1)

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

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
getgrav/grav0.8.0 ... 2.0.0-rc.9 (335 versions)
  • every version up to 2.0.1: fixed in 2.0.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 43× 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. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-08 09:34 UTCEG score recompute
  4. 2026-10-07 23:48 UTCEPSS rescore
  5. 2026-10-07 08:48 UTCEG score recompute
  6. 2026-10-06 15:18 UTCEPSS rescore
  7. 2026-10-06 07:59 UTCEG score recompute
  8. 2026-10-05 17:43 UTCEPSS rescore
  9. 2026-10-04 23:22 UTCEPSS rescore
  10. 2026-10-03 16:56 UTCEG score recompute
  11. 2026-10-03 14:26 UTCEPSS rescore
  12. 2026-10-02 17:56 UTCEPSS rescore
  13. 2026-10-02 11:07 UTCEG score recompute
  14. 2026-10-01 19:50 UTCEPSS rescore
  15. 2026-10-01 10:07 UTCEG score recompute
  16. 2026-09-30 15:03 UTCEPSS rescore
  17. 2026-09-30 09:21 UTCEG score recompute
  18. 2026-09-29 08:33 UTCEG score recompute
  19. 2026-09-28 13:51 UTCEPSS rescore
  20. 2026-09-28 07:46 UTCEG score recompute
  21. 2026-09-27 07:00 UTCEG score recompute
  22. 2026-09-26 15:59 UTCEPSS rescore
  23. 2026-09-25 13:07 UTCEG score recompute
  24. 2026-09-24 12:16 UTCEG score recompute
  25. 2026-09-23 17:54 UTCEPSS rescore
Show 57 more
  1. 2026-09-23 11:30 UTCEG score recompute
  2. 2026-09-22 10:43 UTCEG score recompute
  3. 2026-09-21 09:56 UTCEG score recompute
  4. 2026-09-20 20:16 UTCEPSS rescore
  5. 2026-09-20 09:09 UTCEG score recompute
  6. 2026-09-19 07:04 UTCEG score recompute
  7. 2026-09-18 19:28 UTCEPSS rescore
  8. 2026-09-18 06:17 UTCEG score recompute
  9. 2026-09-17 05:31 UTCEG score recompute
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-15 03:29 UTCEG score recompute
  13. 2026-09-14 02:43 UTCEG score recompute
  14. 2026-09-13 01:57 UTCEG score recompute
  15. 2026-09-12 01:11 UTCEG score recompute
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-11 09:37 UTCEPSS rescore
  18. 2026-09-11 00:24 UTCEG score recompute
  19. 2026-09-09 02:37 UTCEG score recompute
  20. 2026-09-08 22:01 UTCEPSS rescore
  21. 2026-09-07 16:01 UTCEPSS rescore
  22. 2026-09-07 15:42 UTCEG score recompute
  23. 2026-09-06 13:47 UTCEPSS rescore
  24. 2026-09-06 13:40 UTCEG score recompute
  25. 2026-09-05 12:54 UTCEG score recompute
  26. 2026-09-04 12:07 UTCEG score recompute
  27. 2026-09-04 05:07 UTCEPSS rescore
  28. 2026-09-03 11:20 UTCEG score recompute
  29. 2026-09-02 14:12 UTCEPSS rescore
  30. 2026-09-02 10:32 UTCEG score recompute
  31. 2026-09-01 13:54 UTCEPSS rescore
  32. 2026-09-01 09:45 UTCEG score recompute
  33. 2026-09-01 04:40 UTCEPSS rescore
  34. 2026-08-31 08:58 UTCEG score recompute
  35. 2026-08-30 19:17 UTCEPSS rescore
  36. 2026-08-30 07:25 UTCEG score recompute
  37. 2026-08-30 01:22 UTCEPSS rescore
  38. 2026-08-29 06:38 UTCEG score recompute
  39. 2026-08-28 21:42 UTCEPSS rescore
  40. 2026-08-28 05:48 UTCEG score recompute
  41. 2026-08-27 14:25 UTCEPSS rescore
  42. 2026-08-27 05:00 UTCEG score recompute
  43. 2026-08-26 14:46 UTCEPSS rescore
  44. 2026-08-26 04:13 UTCEG score recompute
  45. 2026-08-25 13:49 UTCEPSS rescore
  46. 2026-08-25 03:22 UTCEG score recompute
  47. 2026-08-25 02:20 UTCEG score recompute
  48. 2026-08-24 20:18 UTCEG score recompute
  49. 2026-08-23 19:32 UTCEG score recompute
  50. 2026-08-23 00:19 UTCEPSS rescore
  51. 2026-08-22 18:46 UTCEG score recompute
  52. 2026-08-21 23:49 UTCEPSS rescore
  53. 2026-08-21 18:00 UTCEG score recompute
  54. 2026-08-20 22:55 UTCEPSS rescore
  55. 2026-08-19 16:24 UTCEG score recompute
  56. 2026-08-19 15:38 UTCEG score recompute
  57. 2026-08-19 15:37 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-61690?
CVE-2026-61690 is a medium vulnerability published on August 19, 2026. Grav is a file-based Web platform. Prior to 2.0.1, Grav ZipArchiver::extract() in system/src/Grav/Common/Filesystem/ZipArchiver.php passes archives to ZipArchive::extractTo() without enforcing the system.gpm.archive uncompressed-size, file-count, or nesting-depth limits. Code using…
When was CVE-2026-61690 disclosed?
CVE-2026-61690 was first published on August 19, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-61690 actively exploited?
CVE-2026-61690 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-61690?
CVE-2026-61690 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-61690?
A fix for CVE-2026-61690 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-61690 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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