CVE-2026-48526Disclosure(pyjwt_project / pyjwt)

LOWCVSS 7.4 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker to use the issuer public key as the secret key for HMAC algorithm. This vulnerability is fixed in 2.13.0.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-287CWE-347

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • pyjwt

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 1 mentions (2026-07-15); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Products
pyjwt

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-15: 1Mentions · 2026-09-30: 1Technical Details · 2026-09-30: 107-1509-30
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • DailyCVE@dailycve
    Disclosure

    🔴 PyJWT, JWT Algorithm Confusion BOM Bypass, #CVE-2026-48526 (High) -DC-Sep2026-2641 https://dailycve.com/pyjwt-jwt-algorithm-confusion-bom-bypass-cve-2026-48526-high-dc-sep2026-2641/

    Post summary

    The tweet announces a new high-severity vulnerability in PyJWT (CVE-2026-48526) involving JWT algorithm confusion and BOM bypass, pointing readers to a DailyCVE advisory without mentioning exploits, PoCs, or patches.

    0000039
    239 followersView on X
  • MalwareObserver@MalwareObserver
    Disclosure

    🐛 VULNERABILITIES CVE Notify: 🚨 [CVE-2026-48526](https://github.com/jpadilla/pyjwt/security/advisories/GHSA-xgmm-8j9v-c9wx) PyJWT... https://github.com/jpadilla/pyjwt/security/advisories/GHSA-xgmm-8j9v-c9wx #ZeroDay #PatchManagement #Vulnerability

    Post summary

    The post announces the discovery of CVE‑2026‑48526 for PyJWT and provides a link to a GitHub security advisory, without detailed technical or exploit information.

    0000040
    11 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Apppyjwt_projectpyjwt---

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