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CVE-2026-68512— Paaster: No rate limiting on account login, combined with a public username-enumeration/salt endpoint, enables offline credential-stuffing

Quick assessment

Affected
WardPearce paaster
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.

Paaster 是一个剪贴板（pastebin）应用程序。在 3.3.0 版本之前，Paaster 的账户登录功能未实施任何速率限制、账户锁定或验证码（CAPTCHA）机制；同时，其一个配套接口会公开披露指定用户名是否存在，并泄露该账户的密码哈希盐值。攻击者可利用这些缺陷枚举真实账户，随后以无限制、未节流的方式对账户密码进行暴力破解。该问题已在 3.3.0 版本中修复。

CVSS 6.3 · Medium
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I. Basic Information for CVE-2026-68512

Vulnerability Information
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Vulnerability Title
Paaster: No rate limiting on account login, combined with a public username-enumeration/salt endpoint, enables offline credential-stuffing
Source: CVE Program / CVE List V5
Vulnerability Description
Paaster is a pastebin application. Prior to version 3.3.0, Paaster's account login has no rate limiting, lockout, or CAPTCHA of any kind, and a companion endpoint openly discloses whether a username exists along with that account's password-hashing salts. Together these let an attacker enumerate real accounts and then brute-force their passwords with unlimited, unthrottled attempts. This issue has been patched in version 3.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WardPearce paaster < 3.3.0 -

II. Public POCs for CVE-2026-68512

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III. Intelligence Information for CVE-2026-68512

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Other References for CVE-2026-68512 (2)

IV. Related Vulnerabilities

Same product: paaster
Same vendor: WardPearce
Same weakness: CWE-204