CVE-2026-80348

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-26. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
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: None knownExposed: 0

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

TarsWeb enforces its per-application roles by calling AuthService from individual controller methods, and four methods in app/controller/patch/PatchController.js make no such call. uploadAndPublish accepts a package upload and then builds and dispatches a deployment task to every server matching the supplied application and module name, while its sibling uploadPatchPackage, which only stores the package, does check developer authorization first. The only precondition uploadAndPublish enforces is that the named server is registered, and any registered server in the installation satisfies it. downloadPackage and deletePatchPackage select a package by an unscoped sequential primary key covering every application's uploads, and setPatchPackageDefault changes which package a given application deploys by default. Any authenticated account, including one holding a role scoped to a single unrelated application, can therefore push a package to and trigger its deployment on any server the console manages, retrieve or delete any other application's package, and change which package is deployed by default.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

August 26, 2026

Last Modified

August 26, 2026

Advisory Details (4)

Auto-updated Aug 26, 2026
No patch confirmed yet.
generic

TarsWeb through 3.0.16 Missing Authorization on Patch Deploy, Download and Delete Endpoints | Advisories | VulnCheck

https://www.vulncheck.com/advisories/tarsweb-through-3.0.16-missing-authorization-on-patch-deploy-download-and-delete-endpoints
generic

TarsWeb/app/controller/patch/PatchController.js at v3.0.16 · TarsCloud/TarsWeb · GitHub

https://github.com/TarsCloud/TarsWeb/blob/v3.0.16/app/controller/patch/PatchController.js
generic

Missing authorization on tars-web patch/deploy endpoints allows any authenticated user to deploy and read arbitrary packages for applications they have no permission on · Issue #213 · TarsCloud/TarsWeb · GitHub

https://github.com/TarsCloud/TarsWeb/issues/213
generic

GitHub - TarsCloud/TarsWeb: TARS Projects Dashboard · GitHub

https://github.com/TarsCloud/TarsWeb

Vendor Advisories for CVE-2026-80348(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 17× in last 7d / 17× 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 01:22 UTCEPSS rescore
  2. 2026-08-29 21:43 UTCGHSA enrichment
  3. 2026-08-29 10:53 UTCGHSA enrichment
  4. 2026-08-28 23:58 UTCEG score recompute
  5. 2026-08-28 23:58 UTCGHSA enrichment
  6. 2026-08-28 21:42 UTCEPSS rescore
  7. 2026-08-28 12:40 UTCGHSA enrichment
  8. 2026-08-28 01:48 UTCGHSA enrichment
  9. 2026-08-27 14:59 UTCEG score recompute
  10. 2026-08-27 14:59 UTCGHSA enrichment
  11. 2026-08-27 14:25 UTCEPSS rescore
  12. 2026-08-27 04:10 UTCEG score recompute
  13. 2026-08-27 04:10 UTCGHSA enrichment
  14. 2026-08-26 17:21 UTCEG score recompute
  15. 2026-08-26 16:22 UTCEG score recompute
  16. 2026-08-26 10:18 UTCEG score recompute
  17. 2026-08-26 10:17 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-80348?
CVE-2026-80348 is a high vulnerability published on August 26, 2026. TarsWeb enforces its per-application roles by calling AuthService from individual controller methods, and four methods in app/controller/patch/PatchController.js make no such call. uploadAndPublish accepts a package upload and then builds and dispatches a deployment task to every server matching…
When was CVE-2026-80348 disclosed?
CVE-2026-80348 was first published in the National Vulnerability Database 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-2026-80348 actively exploited?
CVE-2026-80348 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 58.3% of all scored CVEs.
What is the CVSS score of CVE-2026-80348?
CVE-2026-80348 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-80348?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-80348, 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-2026-80348

Explore →

Is Your Infrastructure Affected by CVE-2026-80348?

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

Start Free Scan →Browse All CVEs