CVE-2026-122326— Chevereto before 4.5.8 Private Album Image Disclosure via get-album-contents

Quick assessment

Affected

Chevereto Chevereto

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.

Chevereto 4.5.8 之前的版本在路由的动作中存在一个授权绕过漏洞。该漏洞允许未认证的攻击者通过提供其他用户的相册 ID 来列出私密相册。若攻击者拥有来自任意公开页面的会话令牌以及某个相册的编码 ID，即可获取图像文件名、查看器 URL 和直接文件 URL，并下载私密图像。

CVSS 5.3 · Medium Updated Nov 05, 2026

Possible ATT&CK Techniques 2 AI

T1078 · Valid Accounts T1068 · Exploitation for Privilege Escalation

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Vulnerability Information

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Vulnerability Title

Chevereto before 4.5.8 Private Album Image Disclosure via get-album-contents

Source: CVE Program / CVE List V5

Vulnerability Description

Chevereto before 4.5.8 contains an authorization bypass vulnerability in the get-album-contents action of the /json route that allows unauthenticated attackers to list private albums by supplying another user's album id. Attackers with a session token from any public page and an album's encoded id can obtain image filenames, viewer and direct file URLs, and download private images.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

通过用户控制密钥绕过授权机制

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Chevereto	Chevereto	0 ~ 4.5.8	-

II. Public POCs for CVE-2026-122326

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-122326

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Other References for CVE-2026-122326 (8)

https://github.com/chevereto/chevereto/issues/136 issue-tracking
https://github.com/chevereto/chevereto product
https://github.com/chevereto/chevereto/commit/fe56eb789ecf5e26c84068ba7d88b7a20ea65f5c patch
https://github.com/chevereto/chevereto/blob/4.5.7/app/src/Legacy/Classes/Listing.php#L834-L885 technical-description
https://github.com/chevereto/chevereto/blob/4.5.7/app/legacy/routes/json.php#L336-L410 technical-description
https://hackmd.io/@hieund/chevereto-get-album-contents-private-album-image-disclosure third-party-advisory
https://github.com/chevereto/chevereto/releases/tag/4.5.8 release-notes
https://www.vulncheck.com/advisories/chevereto-before-4.5.8-private-album-image-disclosure-via-get-album-contents third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-122326

IV. Related Vulnerabilities

Same product: Chevereto

Same vendor: Chevereto

CVE-2026-55417
Chevereto private profile setting leaks username on /json en

Same weakness: CWE-639