CVE-2026-19362Public exploitNetwork attack vector

Authorization interruption via unchecked UTF-8 slicing

Published Aug 9, 2026 · Updated Aug 9, 2026

Denial of service in Luciano Mammino oidc-authorizer 0.4.0 allows remote attackers to interrupt authorization via a crafted header. The parse_token_from_header function slices authorization_token at byte offset 7 without verifying a UTF-8 character boundary, so a spanning multibyte sequence triggers a Rust panic. Unauthenticated requests reaching the Lambda authorizer can fail that invocation and interrupt authorization processing, with no reported confidentiality or integrity impact.

CVSS severity5.3
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Luciano Mammino oidc-authorizer 0.4.0 allows remote attackers to interrupt authorization via a crafted header. The parse_token_from_header function slices authorization_token at byte offset 7 without verifying a UTF-8 character boundary, so a spanning multibyte sequence triggers a Rust panic. Unauthenticated requests reaching the Lambda authorizer can fail that invocation and interrupt authorization processing, with no reported confidentiality or integrity impact.

The record

CVE
CVE-2026-19362
Published
Aug 9, 2026
Updated
Aug 9, 2026
Vendor
Luciano Mammino
Product
oidc-authorizer
Classifications
CWE-404, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Luciano Mammino · oidc-authorizerversion=0.4.0

Published CVSS scores

5.0VulDBAV:N/AC:L/Au:N/C:N/I:N/A:P
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1190Exploit Public-Facing Application

Public exploit references

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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