CVE-2026-90959

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-24. A secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
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: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A path traversal vulnerability was found in pulpcore. The content upload API accepts a 'file_url' parameter that allows users with file repository privileges to specify a local file URL for Pulp to download and store. A URL scheme validation check uses a string prefix comparison that only rejects URLs beginning with 'file://', but Python's URL parser recognizes the 'file:' scheme without double slashes, creating a mismatch between what is validated and what is dispatched to the file downloader. An authenticated user with low-privilege repository permissions can supply a specially crafted URL using relative path traversal sequences to read any file accessible to the Pulp server process. In deployments that include Pulp Container, successful exploitation allows an attacker to read the container registry token signing private key and forge bearer tokens, granting unauthorized access to all private container repositories in the affected registry.

CVSS v3
8.1
EG Score
8.1HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity81% × 45%
Exploitation0% × 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
22nd
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 none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 24, 2026

Last Modified

October 1, 2026

Advisory Details (2)

Auto-updated Sep 24, 2026
Patch available. Sources: redhat.
redhat

2533037 – (CVE-2026-90959) CVE-2026-90959 pulpcore: pulpcore: file:// scheme allowlist bypass in content upload file_url field enables arbitrary file read and Pulp Container registry signing key theft

https://bugzilla.redhat.com/show_bug.cgi?id=2533037
redhat Patch Available

CVE-2026-90959 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-90959

Vendor Advisories for CVE-2026-90959(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 32× 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. 2026-10-04 06:55 UTCGHSA enrichment
  2. 2026-10-03 18:39 UTCEG score recompute
  3. 2026-10-03 18:38 UTCGHSA enrichment
  4. 2026-10-03 06:17 UTCGHSA enrichment
  5. 2026-10-02 18:00 UTCEG score recompute
  6. 2026-10-02 18:00 UTCGHSA enrichment
  7. 2026-10-02 05:44 UTCEG score recompute
  8. 2026-10-02 05:44 UTCGHSA enrichment
  9. 2026-10-01 19:51 UTCEPSS rescore
  10. 2026-10-01 17:27 UTCEG score recompute
  11. 2026-10-01 17:27 UTCGHSA enrichment
  12. 2026-10-01 16:45 UTCEG score recompute
  13. 2026-10-01 16:44 UTCGHSA enrichment
  14. 2026-10-01 07:51 UTCGHSA enrichment
  15. 2026-09-30 19:35 UTCEG score recompute
  16. 2026-09-30 19:35 UTCGHSA enrichment
  17. 2026-09-30 15:04 UTCEPSS rescore
  18. 2026-09-30 07:19 UTCEG score recompute
  19. 2026-09-30 07:19 UTCGHSA enrichment
  20. 2026-09-30 06:50 UTCEG score recompute
  21. 2026-09-30 06:50 UTCGHSA enrichment
  22. 2026-09-29 23:57 UTCEG score recompute
  23. 2026-09-29 23:57 UTCGHSA enrichment
  24. 2026-09-29 08:38 UTCEG score recompute
  25. 2026-09-29 08:38 UTCGHSA enrichment
Show 24 more
  1. 2026-09-28 20:22 UTCEG score recompute
  2. 2026-09-28 20:22 UTCGHSA enrichment
  3. 2026-09-28 13:52 UTCEPSS rescore
  4. 2026-09-28 13:52 UTCEPSS rescore
  5. 2026-09-28 08:05 UTCGHSA enrichment
  6. 2026-09-27 19:49 UTCEG score recompute
  7. 2026-09-27 19:49 UTCGHSA enrichment
  8. 2026-09-27 13:49 UTCEPSS rescore
  9. 2026-09-27 07:33 UTCGHSA enrichment
  10. 2026-09-26 19:14 UTCEG score recompute
  11. 2026-09-26 19:14 UTCGHSA enrichment
  12. 2026-09-26 15:59 UTCEPSS rescore
  13. 2026-09-26 06:57 UTCEG score recompute
  14. 2026-09-26 06:57 UTCGHSA enrichment
  15. 2026-09-25 18:40 UTCEG score recompute
  16. 2026-09-25 18:40 UTCGHSA enrichment
  17. 2026-09-25 17:58 UTCEG score recompute
  18. 2026-09-25 17:58 UTCGHSA enrichment
  19. 2026-09-25 09:17 UTCGHSA enrichment
  20. 2026-09-24 21:01 UTCEG score recompute
  21. 2026-09-24 21:01 UTCGHSA enrichment
  22. 2026-09-24 15:28 UTCEG score recompute
  23. 2026-09-24 14:57 UTCEG score recompute
  24. 2026-09-24 14:56 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90959?
CVE-2026-90959 is a high vulnerability published on September 24, 2026. A path traversal vulnerability was found in pulpcore. The content upload API accepts a 'file_url' parameter that allows users with file repository privileges to specify a local file URL for Pulp to download and store. A URL scheme validation check uses a string prefix comparison that only rejects…
When was CVE-2026-90959 disclosed?
CVE-2026-90959 was first published on September 24, 2026, with the most recent update on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90959 actively exploited?
CVE-2026-90959 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-90959?
CVE-2026-90959 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-90959?
A fix for CVE-2026-90959 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-90959 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-90959

Explore →

Is Your Infrastructure Affected by CVE-2026-90959?

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

Book a Demo →Browse All CVEs