Skip to main content
CVE-2026-126771VulnerabilityPublished

OpsTree REMS through 1.0.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to

Source GCVE Database

0
Compare
Authoritative record:CVE-2026-126771· Medium 5.1

Not known to be exploited · CVSS 5.1 Medium.

Data as of 11 Nov 2026, 22:34 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.05.1
CNA (VulnCheck)CVSS 3.15.4
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
OpsTree SolutionsREMSAffected
  • <=1.0.0
Fixed in–
GitHubopstree/remspkg:github/opstree/remsOther threatsAffected
  • <=1.0.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Since the vulnerability requires authenticated access and user interaction, restricting attachment types or disabling preview functionality for untrusted content may reduce risk. Monitor the vendor advisory for updates and apply any forthcoming patches promptly. Until a fix is available, exercise caution when handling attachments and educate users about the risk of previewing suspicious files.

Description

OpsTree REMS versions through 1.0.0 have a stored cross-site scripting (XSS) vulnerability. Authenticated attackers can exploit this by uploading attachments with a spoofed text/html Content-Type, such as HTML files disguised with double extensions (e.g., test.html.pdf). When these files are previewed in the REMS application, the embedded JavaScript executes in the context of the victim's browser.

References

Community reviews

Loading reviews…