CVE-2026-86674Public exploitNetwork attack vector

Session hijacking via unrotated login identifier

Published Sep 8, 2026 · Updated Sep 8, 2026

Session fixation in ningzichun Student Management System allows remote attackers to hijack authenticated user sessions. In login.php, successful authentication marks the identifier accepted by session_start() as authenticated without calling session_regenerate_id(true). Exploitation requires PHP to accept a supplied session ID and a victim to authenticate with that fixed ID, after which the attacker reuses it as the victim.

CVSS severity5.3
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

Session fixation in ningzichun Student Management System allows remote attackers to hijack authenticated user sessions. In login.php, successful authentication marks the identifier accepted by session_start() as authenticated without calling session_regenerate_id(true). Exploitation requires PHP to accept a supplied session ID and a victim to authenticate with that fixed ID, after which the attacker reuses it as the victim.

The record

CVE
CVE-2026-86674
Published
Sep 8, 2026
Updated
Sep 8, 2026
Vendor
ningzichun
Product
Student Management System
Classifications
CWE-384, CAPEC-61, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 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?

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  1. Affected versionversion=98760f5711cf6dc8b4adca53a9e207ca49b02ebf

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ningzichun · Student Management Systemversion=98760f5711cf6dc8b4adca53a9e207ca49b02ebf

Published CVSS scores

7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A:P
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-384Session Fixation
CAPEC-61Session Fixation
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

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Technologies

Your stack

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Your stack

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