CVE-2024-21645Public exploitNetwork attack vector

Log forgery via unsanitized login usernames

Published Jan 8, 2024 · Updated Nov 14, 2024

Log injection in pyLoad before 0.5.0b3.dev77 allows remote attackers to forge log entries through a crafted login username. The WebUI login handlers write the supplied username into failed-login messages without escaping CR or LF delimiters. No authentication or user interaction is required; forged entries can corrupt audit evidence, hide activity, or falsely attribute actions.

CVSS severity5.3
Medium
EPSS probability24.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Log injection in pyLoad before 0.5.0b3.dev77 allows remote attackers to forge log entries through a crafted login username. The WebUI login handlers write the supplied username into failed-login messages without escaping CR or LF delimiters. No authentication or user interaction is required; forged entries can corrupt audit evidence, hide activity, or falsely attribute actions.

The record

CVE
CVE-2024-21645
Published
Jan 8, 2024
Updated
Nov 14, 2024
Vendor
pyLoad
Product
pyLoad
Classifications
CWE-74
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 14, 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=< 0.5.0b3.dev77

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

pyLoad · pyLoadversion=< 0.5.0b3.dev77

Published CVSS scores

5.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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 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 exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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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