CVE-2026-80138

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-26. a secondary CVSS source baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

ClipBucket V5's web installer fails to properly validate or escape the php_cli_filepath parameter before passing it to shell execution. Unauthenticated attackers can submit a crafted POST request to the installer with a malicious php_cli_filepath value to execute arbitrary commands as the web server user.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
53%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 26, 2026

Advisory Details (5)

Auto-updated Aug 26, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

ClipBucket V5 5.5.1 through 5.5.3-#153 OS Command Injection via Installer php_cli_filepath Parameter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/clipbucket-v5-5.5.1-through-5.5.3-153-os-command-injection-via-installer-php-cli-filepath-parameter
github_commit

commit 36e7c6cfd81f (MacWarrior/clipbucket-v5)

Fix landed in MacWarrior/clipbucket-v5 commit 36e7c6cfd81f — awaiting tagged release

https://github.com/MacWarrior/clipbucket-v5/commit/36e7c6cfd81f62a091d2aeef96a8fc2fc2d85dc4
generic

clipbucket-v5/upload/includes/classes/system.class.php at 5.5.3-#153 · MacWarrior/clipbucket-v5 · GitHub

https://github.com/MacWarrior/clipbucket-v5/blob/5.5.3-%23153/upload/includes/classes/system.class.php
generic

clipbucket-v5/upload/cb_install/functions_install.php at 5.5.3-#153 · MacWarrior/clipbucket-v5 · GitHub

https://github.com/MacWarrior/clipbucket-v5/blob/5.5.3-%23153/upload/cb_install/functions_install.php
generic

GitHub - MacWarrior/clipbucket-v5: Open source video hosting with PHP · GitHub

https://github.com/MacWarrior/clipbucket-v5

Vendor Advisories for CVE-2026-80138(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 38× in last 7d / 38× 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. 2026-08-30 04:01 UTCEG score recompute
  2. 2026-08-30 04:01 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-30 00:04 UTCGHSA enrichment
  5. 2026-08-29 20:06 UTCGHSA enrichment
  6. 2026-08-29 16:08 UTCGHSA enrichment
  7. 2026-08-29 12:09 UTCGHSA enrichment
  8. 2026-08-29 07:58 UTCGHSA enrichment
  9. 2026-08-29 03:59 UTCGHSA enrichment
  10. 2026-08-29 00:02 UTCEG score recompute
  11. 2026-08-29 00:02 UTCGHSA enrichment
  12. 2026-08-28 21:42 UTCEPSS rescore
  13. 2026-08-28 16:06 UTCGHSA enrichment
  14. 2026-08-28 11:27 UTCGHSA enrichment
  15. 2026-08-28 07:31 UTCGHSA enrichment
  16. 2026-08-28 03:33 UTCGHSA enrichment
  17. 2026-08-27 23:36 UTCGHSA enrichment
  18. 2026-08-27 19:37 UTCGHSA enrichment
  19. 2026-08-27 15:40 UTCEG score recompute
  20. 2026-08-27 15:40 UTCGHSA enrichment
  21. 2026-08-27 14:25 UTCEPSS rescore
  22. 2026-08-27 11:41 UTCGHSA enrichment
  23. 2026-08-27 07:44 UTCGHSA enrichment
  24. 2026-08-27 03:47 UTCGHSA enrichment
  25. 2026-08-26 23:50 UTCGHSA enrichment
Show 13 more
  1. 2026-08-26 19:52 UTCGHSA enrichment
  2. 2026-08-26 15:56 UTCEG score recompute
  3. 2026-08-26 15:56 UTCGHSA enrichment
  4. 2026-08-26 14:47 UTCEPSS rescore
  5. 2026-08-26 12:34 UTCEG score recompute
  6. 2026-08-26 12:33 UTCGHSA enrichment
  7. 2026-08-26 11:25 UTCGHSA enrichment
  8. 2026-08-26 07:24 UTCGHSA enrichment
  9. 2026-08-26 03:27 UTCEG score recompute
  10. 2026-08-26 03:27 UTCGHSA enrichment
  11. 2026-08-25 23:31 UTCEG score recompute
  12. 2026-08-25 22:25 UTCEG score recompute
  13. 2026-08-25 22:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-80138?
CVE-2026-80138 is a critical vulnerability published on August 25, 2026. ClipBucket V5's web installer fails to properly validate or escape the phpclifilepath parameter before passing it to shell execution. Unauthenticated attackers can submit a crafted POST request to the installer with a malicious phpclifilepath value to execute arbitrary commands as the web server…
When was CVE-2026-80138 disclosed?
CVE-2026-80138 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-80138 actively exploited?
CVE-2026-80138 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 46.5% of all scored CVEs.
What is the CVSS score of CVE-2026-80138?
CVE-2026-80138 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-80138?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80138, 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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