CVE-2025-45770Network attack vector

Unspecified impact via short JWS signing keys

Published Jul 31, 2025 · Updated Aug 17, 2025

Inadequate encryption strength in lcobucci/jwt 5.4.3 and earlier allows remote attackers to cause unspecified impact via short JWS keys. The cited report states only that HMAC and RSA key lengths do not meet referenced standards; it names no vulnerable function or demonstrated attack. The claim is disputed because applications choose key lengths, so an affected deployment cannot be identified from the library version alone.

CVSS severity7.0
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inadequate encryption strength in lcobucci/jwt 5.4.3 and earlier allows remote attackers to cause unspecified impact via short JWS keys. The cited report states only that HMAC and RSA key lengths do not meet referenced standards; it names no vulnerable function or demonstrated attack. The claim is disputed because applications choose key lengths, so an affected deployment cannot be identified from the library version alone.

The record

CVE
CVE-2025-45770
Published
Jul 31, 2025
Updated
Aug 17, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-326
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.0CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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