CVE-2021-27885Public exploitNetwork attack vector

Account-setting changes via tokenless POST requests

Published Mar 2, 2021 · Updated Aug 3, 2024

Cross-site request forgery in e107 through 2.3.0 allows remote attackers to submit account-setting changes through a logged-in victim. usersettings.php accepts state-changing POST forms without the e_TOKEN field that the patch adds to profile and password forms. A victim must remain logged in and open attacker-controlled content; resulting changes are limited to operations available to that victim's account.

CVSS severity8.8
High
EPSS probability3.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in e107 through 2.3.0 allows remote attackers to submit account-setting changes through a logged-in victim. usersettings.php accepts state-changing POST forms without the e_TOKEN field that the patch adds to profile and password forms. A victim must remain logged in and open attacker-controlled content; resulting changes are limited to operations available to that victim's account.

The record

CVE
CVE-2021-27885
Published
Mar 2, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 2, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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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