CVE-2021-3977 json
Cross-site Scripting (XSS) - Stored in invoiceninja/invoiceninja
published 2021-12-24 4 y ago modified 2026-06-17 4 mo ago also GHSA-xg6r-5gx4-qxjm , EUVD-2022-0741
- cvss
- 6.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
invoiceninja is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Patch / fix
- packagist hillelcoren/invoice-ninja 5.3.35
- invoiceninja invoiceninja/invoiceninja v.5.33
Exploit prediction
0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- huntr.dev https://huntr.dev/bounties/99c4ed09-b66f-474a-bd74-eeccf9339fde referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | hillelcoren/invoice-ninja | <5.3.35 |
5.3.35 |
Affected products
- invoiceninja invoiceninja/invoiceninja
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/invoiceninja/invoiceninja/commit/1186eaa82375692d01d5ef3369c5b7bc7315b55f
web, patch, third-party-advisory
-
huntr.dev
/bounties/99c4ed09-b66f-474a-bd74-eeccf9339fde
web, exploit, issue-tracking, patch, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-3977
advisory
-
github.com
/invoiceninja/invoiceninja
package
-
github.com
/invoiceninja/invoiceninja/releases/tag/v5.3.35
web
Sources
- CVE List CVE-2021-3977
- GitHub Advisory GHSA-xg6r-5gx4-qxjm
- NVD CVE-2021-3977
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.