CVE-2024-1920Network attack vector

Token forgery via hard-coded verification key

Published Feb 27, 2024 · Updated Aug 1, 2024

Hard-coded key use in LightPicture 1.2.0 through 1.2.2 allows remote attackers to compromise token verification without authentication. The handle function in app/middleware/TokenVerify.php verifies attacker-supplied tokens with a cryptographic key embedded in application code. Exploitation requires high complexity and no user interaction; published records do not define the exact resulting access.

CVSS severity8.1
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded key use in LightPicture 1.2.0 through 1.2.2 allows remote attackers to compromise token verification without authentication. The handle function in app/middleware/TokenVerify.php verifies attacker-supplied tokens with a cryptographic key embedded in application code. Exploitation requires high complexity and no user interaction; published records do not define the exact resulting access.

The record

CVE
CVE-2024-1920
Published
Feb 27, 2024
Updated
Aug 1, 2024
Vendor
osuuu
Product
LightPicture
Classifications
CWE-321, T1606
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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?

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

  1. Affected versionversion=1.2.0
  2. Affected versionversion=1.2.1
  3. Affected versionversion=1.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

osuuu · LightPictureversion=1.2.0; version=1.2.1; version=1.2.2

Published CVSS scores

5.1VulDBAV:N/AC:H/Au:N/C:P/I:P/A:P
8.1NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
5.6VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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-321Use of Hard-coded Cryptographic Key
T1606Forge Web Credentials

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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