CVE-2021-40272 json
OP5 Monitor 8.3.1, 8.3.2, and OP5 8.3.3 are vulnerable to Cross Site Scripting (XSS).
published 2022-11-14 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27456
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known, plus a Nuclei check
Summary
OP5 Monitor 8.3.1, 8.3.2, and OP5 8.3.3 are vulnerable to Cross Site Scripting (XSS).
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
1.13% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Nuclei template IRTS OP5 Monitor - Cross-Site Scripting nuclei detection template
- github.com https://github.com/hosakauk/exploits/blob/master/itrs_op5_monitor_xss.pdf referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/hosakauk/exploits/blob/master/itrs_op5_monitor_xss.pdf
exploit, third-party-advisory
Sources
- CVE List CVE-2021-40272
- NVD CVE-2021-40272
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.