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: 0.4%, top 69% 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, 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%CVSS: 6.5Exploit: Elevated riskExposed: 0

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

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
6.5(medium)
EG Risk
60(Attend)
EG Risk 60/100SSVC: Attend

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%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

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
github Patch Available🟡 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 rangeFixed inDependents
getgrav/grav0.8.0 ... 2.0.0-rc.9 (335 versions)2.0.1—

Weakness Classification(1)

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

Data Freshness Timeline

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

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 in the National Vulnerability Database 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% probability of exploitation in the next 30 days, which ranks it in the top 68.5% of all scored CVEs.
What is the CVSS score of CVE-2026-61690?
CVE-2026-61690 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-61690?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-61690, 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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