Vulnerability · Published Feb 1, 2021 · Assigned by mitre

CVE-2020-26547

Critical 9.8

In plain English

A critical-severity security flaw in the affected 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 46% of all known vulnerabilities).

Severity (CVSS NVD)9.8Critical

Exploit odds (30 days)0.6%top 53.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Monal before 4.9 does not implement proper sender verification on MAM and Message Carbon (XEP-0280) results. This allows a remote attacker (able to send stanzas to a victim) to inject arbitrary messages into the local history, with full control over the sender and receiver displayed to the victim.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/anurodhp/Monal/commits/develop x_refsource_MISC
https://monal.im/blog/cve-2020-26547/ x_refsource_CONFIRM