CVE-2023-50658Network attack vector

Service interruption via unbounded PBES2 iteration count

Published Dec 25, 2023 · Updated Aug 2, 2024

Uncontrolled resource consumption in jose2go before 1.6.0 allows remote attackers to interrupt services by submitting crafted JWE data. Pbse2HmacAesKW.Unwrap accepts an attacker-controlled p2c header value without an upper bound and uses it as the PBES2 iteration count, driving excessive CPU work during decryption. Exposure requires an application to pass attacker-controlled PBES2-encrypted JWE blobs to affected decryption paths; repeated processing can exhaust CPU and stall the application without affecting data confidentiality or integrity.

CVSS severity7.5
High
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in jose2go before 1.6.0 allows remote attackers to interrupt services by submitting crafted JWE data. Pbse2HmacAesKW.Unwrap accepts an attacker-controlled p2c header value without an upper bound and uses it as the PBES2 iteration count, driving excessive CPU work during decryption. Exposure requires an application to pass attacker-controlled PBES2-encrypted JWE blobs to affected decryption paths; repeated processing can exhaust CPU and stall the application without affecting data confidentiality or integrity.

The record

CVE
CVE-2023-50658
Published
Dec 25, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-770, CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3GitHub Advisory DatabaseCVSS: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.

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-770Allocation of Resources Without Limits or Throttling
CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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