CVE-2026-3268Public exploitNetwork attack vector

Authenticated session corruption via unchecked attribute deletion

Published Feb 26, 2026 · Updated Feb 26, 2026

Improper access control in PSI Probe 5.0 through 5.3.0 allows remote authenticated users to delete attributes from any Tomcat session. RemoveSessAttributeController trusts supplied sid and attr parameters, finds the selected session, and calls removeAttribute without checking ownership or restricting attribute names. The probeuser role is sufficient; successful requests corrupt the target application's session state and can disrupt authorization or other session-dependent behavior.

CVSS severity4.3
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in PSI Probe 5.0 through 5.3.0 allows remote authenticated users to delete attributes from any Tomcat session. RemoveSessAttributeController trusts supplied sid and attr parameters, finds the selected session, and calls removeAttribute without checking ownership or restricting attribute names. The probeuser role is sufficient; successful requests corrupt the target application's session state and can disrupt authorization or other session-dependent behavior.

The record

CVE
CVE-2026-3268
Published
Feb 26, 2026
Updated
Feb 26, 2026
Vendor
PSI Probe
Product
PSI Probe
Classifications
CWE-284, CWE-266, T1565
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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=5.0
  2. Affected versionversion=5.1
  3. Affected versionversion=5.2
  4. Affected versionversion=5.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PSI Probe · PSI Probeversion=5.0; version=5.1; version=5.2; version=5.3.0

Published CVSS scores

5.5VulDBAV:N/AC:L/Au:S/C:N/I:P/A:P
5.4VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-266Incorrect Privilege Assignment
T1565Data Manipulation

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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