CVE-2026-100625

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-26. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Capgo (capgo.app) exposes a native build TUS upload proxy (supabase/functions/_backend/public/build/upload.ts) that authorizes a caller against a single build job identified by the supplied builder_job_id and validates only that job's stored upload_path, but then forwards the user-controlled TUS resource suffix taken from /build/upload/:jobId/* to the builder service while injecting Capgo's privileged builder API key. Because the forwarded suffix is never bound to the authorized job's upload_path or upload_session_key, a caller holding a valid 'all' or 'write' Capgo API key with app.build_native permission for one application can use its authorized proxy path for job A to write to the TUS upload resource of another job B, provided that resource suffix is known or exposed, corrupting that build's artifacts. All versions are affected; no patch was available at the time of advisory publication.

CVSS v3
7.1
EG Score
7.1HIGHhigh confidence
EG Risk
48
EG Risk 48/100CISA 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
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
15th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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

September 26, 2026

Last Modified

September 30, 2026

Advisory Details (2)

Auto-updated Sep 26, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Capgo Build Upload Proxy Authorization Bypass via TUS Resource | Advisories | VulnCheck

https://www.vulncheck.com/advisories/capgo-build-upload-proxy-authorization-bypass-via-tus-resource
github Patch Available🟡 PoC Available

Build upload proxy authorizes one job but forwards writes to arbitrary TUS upload resources · Advisory · Cap-go/capgo.app · GitHub

https://github.com/Cap-go/capgo.app/security/advisories/GHSA-r45q-x4gr-3mvv

Vendor Advisories for CVE-2026-100625(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 34× in last 7d / 39× 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. 2026-10-04 11:54 UTCGHSA enrichment
  2. 2026-10-03 23:10 UTCEG score recompute
  3. 2026-10-03 23:10 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 10:21 UTCGHSA enrichment
  6. 2026-10-02 21:37 UTCEG score recompute
  7. 2026-10-02 21:37 UTCGHSA enrichment
  8. 2026-10-02 08:54 UTCGHSA enrichment
  9. 2026-10-01 20:09 UTCEG score recompute
  10. 2026-10-01 20:09 UTCGHSA enrichment
  11. 2026-10-01 19:49 UTCEPSS rescore
  12. 2026-10-01 07:24 UTCGHSA enrichment
  13. 2026-09-30 18:41 UTCEG score recompute
  14. 2026-09-30 18:41 UTCGHSA enrichment
  15. 2026-09-30 17:37 UTCEG score recompute
  16. 2026-09-30 17:37 UTCGHSA enrichment
  17. 2026-09-30 15:02 UTCEPSS rescore
  18. 2026-09-30 13:24 UTCEG score recompute
  19. 2026-09-30 13:24 UTCGHSA enrichment
  20. 2026-09-30 13:13 UTCEG score recompute
  21. 2026-09-30 13:13 UTCGHSA enrichment
  22. 2026-09-30 12:33 UTCGHSA enrichment
  23. 2026-09-29 23:48 UTCEG score recompute
  24. 2026-09-29 23:48 UTCGHSA enrichment
  25. 2026-09-29 15:20 UTCEPSS rescore
Show 14 more
  1. 2026-09-29 09:41 UTCEG score recompute
  2. 2026-09-29 09:41 UTCGHSA enrichment
  3. 2026-09-28 20:58 UTCGHSA enrichment
  4. 2026-09-28 17:31 UTCEG score recompute
  5. 2026-09-28 17:31 UTCGHSA enrichment
  6. 2026-09-28 13:50 UTCEPSS rescore
  7. 2026-09-28 04:47 UTCGHSA enrichment
  8. 2026-09-27 16:03 UTCEG score recompute
  9. 2026-09-27 16:02 UTCGHSA enrichment
  10. 2026-09-27 03:19 UTCEG score recompute
  11. 2026-09-27 03:18 UTCGHSA enrichment
  12. 2026-09-26 14:35 UTCEG score recompute
  13. 2026-09-26 13:40 UTCEG score recompute
  14. 2026-09-26 13:30 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100625?
CVE-2026-100625 is a high vulnerability published on September 26, 2026. Capgo (capgo.app) exposes a native build TUS upload proxy (supabase/functions/backend/public/build/upload.ts) that authorizes a caller against a single build job identified by the supplied builderjobid and validates only that job's stored uploadpath, but then forwards the user-controlled TUS…
When was CVE-2026-100625 disclosed?
CVE-2026-100625 was first published on September 26, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100625 actively exploited?
CVE-2026-100625 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (15th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100625?
CVE-2026-100625 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100625?
A fix for CVE-2026-100625 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100625 are linked in the Vendor Advisories panel on this page.

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