CVE-2025-68113: ALTCHA Proof-of-Work Vulnerable to Challenge Splicing and Replay

medium Affects altcha-org/altcha. Feed 2026.10.29.4, updated 2026-10-29; published 2025-12-16; advisory modified 2026-09-10.

ALTCHA Proof-of-Work Vulnerable to Challenge Splicing and Replay

Package: altcha-org/altcha Composer
Affected versions: <1.3.1
Fixed in: 1.3.1
Severity: medium CVSS 6.5
Exploitation: not on CISA KEV · EPSS 0% (40.1th percentile)
Published: 2025-12-16
Source: osv.dev

References

CWE-115 CWE-347

NVD record altcha-org/altcha advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
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