Dashboard / CVE-2026-57957

CVE-2026-57957

LOW
INFO Priority: 0.01 BB Relevance: 55/100
Published: 2026-06-29 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Passive
AT: Present
VC: None
VI: Low
VA: None

Description

Papermark through 0.22.0 contains a cross-origin resource sharing (CORS) misconfiguration vulnerability that allows unauthenticated remote attackers to perform credentialed cross-origin requests by exploiting the TUS-based viewer upload endpoint reflecting arbitrary request Origins with Access-Control-Allow-Credentials set to true. Attackers can lure authenticated victims to malicious pages that silently issue credentialed cross-origin requests to upload arbitrary files into victim datarooms and read credentialed responses.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
papermark papermark 0

References & Advisories (3)

Bug Bounty Relevance

55 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

2.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N

EPSS — Exploitation Probability

0.44%
Raw Score 0.004360
Percentile 38.4%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00436
2026-11-12
0.00436
2026-11-10
0.00436
2026-11-09
0.00436
2026-11-08
0.00436

Intelligence Sources

mitre ref →

External Links