CVE-2026-111649: Rocboss paopao-ce through 0.6.0-alpha.3 IDOR via DownloadAttachment Endpoint

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-16 · updated 2026-10-21
Weakness: CWE-639

Description

Rocboss paopao-ce through 0.6.0-alpha.3 contains an insecure direct object reference vulnerability in DownloadAttachment that allows authenticated users to access private media by supplying arbitrary content IDs. Attackers can enumerate sequential post_content ids via the /v1/attachment endpoint to obtain signed download URLs for other users' private, friend-only and following-only images, videos and attachments.

Affected products

rocboss paopao-ce: through 0.6.0-alpha.3

References

https://github.com/rocboss/paopao-ce
https://github.com/rocboss/paopao-ce/blob/v0.6.0-alpha.3/internal/servants/web/priv.go#L208-L250
https://hackmd.io/@hieuPenguinnn/paopao-ce-attachment-download-cross-user-idor
https://www.vulncheck.com/advisories/rocboss-paopao-ce-through-0.6.0-alpha.3-idor-via-downloadattachment-endpoint
https://hackmd.io/@hieuPenguinnn/paopao-ce-attachment-download-cross-user-idor

Get alerted when CVE-2026-111649 or the next vulnerability affects your stack