CVE-2026-93868Public exploitNetwork attack vector

Account takeover via predictable recovery tokens

Published Sep 18, 2026 · Updated Sep 18, 2026

Weak password recovery in Cotonti 1.0.0 and earlier allows remote attackers to take over accounts via predictable reset tokens. users.passrecover.php hashes microtime() with MD5, while a case-mismatched variable guard always generates a new token with about one million candidates per second. Exploitation requires timing guesses from the server Date header and probing the recovery endpoint, but no account or user interaction.

CVSS severity9.2
Critical
EPSS probability0.73%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak password recovery in Cotonti 1.0.0 and earlier allows remote attackers to take over accounts via predictable reset tokens. users.passrecover.php hashes microtime() with MD5, while a case-mismatched variable guard always generates a new token with about one million candidates per second. Exploitation requires timing guesses from the server Date header and probing the recovery endpoint, but no account or user interaction.

The record

CVE
CVE-2026-93868
Published
Sep 18, 2026
Updated
Sep 18, 2026
Vendor
Cotonti
Product
Cotonti
Classifications
CWE-338, T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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 <=1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Cotonti · Cotontiversion=0 <=1.0.0

Published CVSS scores

8.1VulnCheckCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.2VulnCheckCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-338Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
T1078Valid Accounts

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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