CVE-2026-66414Public exploitNetwork attack vectorHinoki check available

Post-login phishing redirect via unchecked redirectUrl

Published Jul 30, 2026 · Updated Jul 30, 2026

Open redirect in Leantime 3.6.2 and earlier allows remote attackers to send authenticated users to external sites after login. Login::post() sends the user-controlled redirectUrl value to the redirect response after URL sanitization without enforcing the Leantime origin. A victim must follow the crafted login link and successfully authenticate; the off-site navigation enables phishing or credential theft but cannot modify Leantime data.

CVSS severity5.1
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Open redirect in Leantime 3.6.2 and earlier allows remote attackers to send authenticated users to external sites after login. Login::post() sends the user-controlled redirectUrl value to the redirect response after URL sanitization without enforcing the Leantime origin. A victim must follow the crafted login link and successfully authenticate; the off-site navigation enables phishing or credential theft but cannot modify Leantime data.

The record

CVE
CVE-2026-66414
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
Leantime
Product
Leantime
Classifications
CWE-601, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 2026Record 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 <3.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Leantime · Leantimeversion=0 <3.6.2

Published CVSS scores

5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
6.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Spearphishing Link

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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