CVE-2022-27157Network attack vector

Account takeover via predictable password-reset tokens

Published Apr 15, 2022 · Updated Aug 3, 2024

Weak password recovery in PEAR pearweb before 1.32 allows remote attackers to take over accounts through predictable reset tokens. The resetPassword() function in include/users/passwordmanage.php hashes mt_rand(4,13), the target username, server time, and an attacker-chosen password, leaving fewer than 50 likely token values. An unauthenticated requester can exploit the public reset flow against a developer or administrator account and then publish altered packages under that account.

CVSS severity9.8
Critical
EPSS probability1.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak password recovery in PEAR pearweb before 1.32 allows remote attackers to take over accounts through predictable reset tokens. The resetPassword() function in include/users/passwordmanage.php hashes mt_rand(4,13), the target username, server time, and an attacker-chosen password, leaving fewer than 50 likely token values. An unauthenticated requester can exploit the public reset flow against a developer or administrator account and then publish altered packages under that account.

The record

CVE
CVE-2022-27157
Published
Apr 15, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-640, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2022CVE 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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-640Weak Password Recovery Mechanism for Forgotten Password
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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