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CVE-2026-18363— Weak password recovery mechanism in osTicket by Enhancesoft LLC

Quick assessment

Affected
Enhancesoft LLC osTicket
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Enhancesoft osTicket是美国Enhancesoft公司开源的一套票务系统。 Enhancesoft osTicket v1.17.8之前版本和v1.18.4之前版本存在授权问题漏洞，该漏洞源于密码重置令牌验证例程存在逻辑漏洞，只有在时间戳查找失败时才执行过期检查，导致具有现有时间戳的令牌绕过过期验证，攻击者可能重用有效令牌进行未授权密码重置并危害受影响账户。

CVSS 9.1 · Critical EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1110.003 · Password Spraying

Affected Version Matrix 2

VendorProduct Version RangeStatus
Enhancesoft LLC osTicket < 1.17.8 affected
< 1.18.4 affected
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I. Basic Information for CVE-2026-18363

Vulnerability Information
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Vulnerability Title
Weak password recovery mechanism in osTicket by Enhancesoft LLC
Source: CVE Program / CVE List V5
Vulnerability Description
A logic vulnerability in the password reset token validation routine implemented by osTicket in versions prior to v1.17.8 and v1.18.4. During the password reset process, the application retrieves the timestamp associated with the provided token and checks whether the configured validity period has expired. Consequently, the expiry check is only performed if the timestamp lookup fails, allowing tokens with an existing timestamp to bypass the intended expiry validation. Therefore, an attacker able to obtain a valid password reset token could reuse it to perform an unauthorised password reset and compromise the affected account.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
忘记口令恢复机制弱
Source: CVE Program / CVE List V5
Vulnerability Title
Enhancesoft osTicket 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Enhancesoft osTicket是美国Enhancesoft公司开源的一套票务系统。 Enhancesoft osTicket v1.17.8之前版本和v1.18.4之前版本存在授权问题漏洞，该漏洞源于密码重置令牌验证例程存在逻辑漏洞，只有在时间戳查找失败时才执行过期检查，导致具有现有时间戳的令牌绕过过期验证，攻击者可能重用有效令牌进行未授权密码重置并危害受影响账户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Enhancesoft LLC osTicket 0 ~ 1.17.8 -

II. Public POCs for CVE-2026-18363

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III. Intelligence Information for CVE-2026-18363

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Vendor Advisories for CVE-2026-18363 (1)

IV. Related Vulnerabilities

Same product: osTicket
Same weakness: CWE-640

V. Comments for CVE-2026-18363

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