Vulnerability · Published Jan 22, 2021 · Assigned by GitHub_M

CVE-2021-21260XSS in description field

High 7.6

In plain English

A high-severity cross-site scripting in online-invoicing-system from bigprof-software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).

Severity (CVSS 3.1)7.6High

Exploit odds (30 days)0.6%top 50.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Online Invoicing System (OIS) is open source software which is a lean invoicing system for small businesses, consultants and freelancers created using AppGini. In OIS version 4.0 there is a stored XSS which can enables an attacker takeover of the admin account through a payload that extracts a csrf token and sends a request to change password. It has been found that Item description is reflected without sanitization in app/items_view.php which enables the malicious scenario.

Affected products (as reported)

Vendor	Product	Versions
bigprof-software	online-invoicing-system	= 4.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N

References

https://github.com/bigprof-software/online-invoicing-system/security/advisories/GHSA-rm79-5596-r7q4 x_refsource_CONFIRM
https://github.com/bigprof-software/online-invoicing-system/releases/tag/4.2 x_refsource_MISC