CVE-2026-50157

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: 0.5%, top 58% 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
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: None knownExposed: 0

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

Auth0 Symfony is a Symfony SDK for Auth0 Authentication and Management APIs. From 5.0.0-BETA0 until 5.9.0, the Authorizer::authenticate() and Authorizer::supports() paths in the Authorizer security authenticator may accept OAuth 2.0 bearer access tokens from the token URL query parameter as well as the Authorization header for protected HTTP routes. Query-string tokens can be recorded in server logs, browser history, or referrer data and then replayed against protected API endpoints. This issue is fixed in version 5.9.0.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
42%
KEV
Not listed

Published

July 14, 2026

Last Modified

September 14, 2026

Advisory Details (3)

Auto-updated Sep 14, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

5.9.0

Patch available: auth0/symfony 5.9.0

https://github.com/auth0/symfony/releases/tag/5.9.0
github_commit Patch Available

commit bd1851b14ae1 (auth0/symfony)

Patch available: auth0/symfony 5.9.0 (contains commit bd1851b14ae1)

https://github.com/auth0/symfony/commit/bd1851b14ae15e99cbe87c96496cf25da025288a
github Patch Available

Bearer Token Accepted via URL Query Parameter in Auth0 Symfony SDK · Advisory · auth0/symfony · GitHub

https://github.com/auth0/symfony/security/advisories/GHSA-ffq7-hh2j-r24p

Vendor Advisories for CVE-2026-50157(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
auth0/symfony5.0.0 ... 5.8.0 (16 versions)5.9.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 04:51 UTCEG score recompute
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-14 20:27 UTCEG score recompute
  6. 2026-09-14 20:16 UTCEG score recompute
  7. 2026-09-14 18:38 UTCEG score recompute
  8. 2026-07-30 19:02 UTCEG score recompute
  9. 2026-07-26 11:43 UTCEG score recompute
  10. 2026-07-23 03:18 UTCEG score recompute
  11. 2026-07-14 19:56 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-50157?
CVE-2026-50157 is a medium vulnerability published on July 14, 2026. Auth0 Symfony is a Symfony SDK for Auth0 Authentication and Management APIs. From 5.0.0-BETA0 until 5.9.0, the Authorizer::authenticate() and Authorizer::supports() paths in the Authorizer security authenticator may accept OAuth 2.0 bearer access tokens from the token URL query parameter as well as…
When was CVE-2026-50157 disclosed?
CVE-2026-50157 was first published in the National Vulnerability Database on July 14, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50157 actively exploited?
CVE-2026-50157 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 58.3% of all scored CVEs.
What is the CVSS score of CVE-2026-50157?
CVE-2026-50157 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-50157?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50157, 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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