Strix
26.1K

CVE-2021-39249

MEDIUMCVSS 6.1/10EPSS 0.77%

Last modified

CVE-2021-39249 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows reflected XSS because the filenames of uploaded files become predictable through a brute-force attack against the PHP mt_rand function.. EPSS estimates a 0.77% chance of exploitation in the next 30 days.

Description

Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows reflected XSS because the filenames of uploaded files become predictable through a brute-force attack against the PHP mt_rand function.

Metrics

CVSS 3.1
6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability
0.77%

50.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
InvisioncommunityInvision Power Board< 4.6.5.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-39249?
Invision Community (aka IPS Community Suite or IP-Board) before 4.6.5.1 allows reflected XSS because the filenames of uploaded files become predictable through a brute-force attack against the PHP mt_rand function.
How severe is CVE-2021-39249?
CVE-2021-39249 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.77% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39249?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39249?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST