CVE-2026-40039
mediumpriority · track · 0EPSS 0.003 · 27 %ileEUEPSS · scored 2026-10-27
Pachno 1.0.6 contains an open redirection vulnerability that allows attackers to redirect users to arbitrary external websites by manipulating the return_to parameter. Attackers can craft malicious login URLs with unvalidated return_to values to conduct phishing attacks and steal user credentials.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://www.vulncheck.com/advisories/pachno-open-redirection-via-return-to-parametercnnvd
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5981.phpcnnvd
- https://www.vulncheck.com/advisories/pachno-open-redirection-via-return-to-parameterenisa_euvd
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5981.phpenisa_euvd
- https://www.vulncheck.com/advisories/pachno-open-redirection-via-return-to-parameternvd
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2026-5981.phpnvd
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