CVE-2021-36542Public exploitNetwork attack vector

Document locking via forged authenticated requests

Published Aug 3, 2021 · Updated Aug 4, 2024

CSRF in SeedDMS 5.1.x before 5.1.23 and 6.0.x before 6.0.16 allows remote attackers to lock documents through a victim's session. The /op/op.LockDocument.php endpoint accepts a document-locking request without verifying that the authenticated user intended to submit it. A victim must be signed in and visit an attacker-controlled page; exploitation changes only the document's lock state.

CVSS severity4.3
Medium
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in SeedDMS 5.1.x before 5.1.23 and 6.0.x before 6.0.16 allows remote attackers to lock documents through a victim's session. The /op/op.LockDocument.php endpoint accepts a document-locking request without verifying that the authenticated user intended to submit it. A victim must be signed in and visit an attacker-controlled page; exploitation changes only the document's lock state.

The record

CVE
CVE-2021-36542
Published
Aug 3, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious 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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