CVE-2026-10861Network attack vector

Post-login open redirect via unvalidated session URL

Published Jun 4, 2026 · Updated Jun 4, 2026

Open redirect in MISP 2.5.38 and earlier allows remote attackers to redirect users to an external URL after successful authentication. UsersController::routeafterlogin() consumed the pre_login_requested_url session value as a redirect target without enforcing a local application path. Exploitation requires a victim to follow a crafted link and authenticate; the resulting off-site redirect can support phishing or counterfeit login pages.

CVSS severity5.1
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in MISP 2.5.38 and earlier allows remote attackers to redirect users to an external URL after successful authentication. UsersController::routeafterlogin() consumed the pre_login_requested_url session value as a redirect target without enforcing a local application path. Exploitation requires a victim to follow a crafted link and authenticate; the resulting off-site redirect can support phishing or counterfeit login pages.

The record

CVE
CVE-2026-10861
Published
Jun 4, 2026
Updated
Jun 4, 2026
Vendor
MISP Project
Product
MISP
Classifications
CWE-601, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 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 <=2.5.38

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MISP Project · MISPversion=0 <=2.5.38

Published CVSS scores

5.1CIRCLCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
6.1NVDCVSS: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.

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-601URL Redirection to Untrusted Site ('Open Redirect')
T1566.002Spearphishing Link

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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