CVE-2018-25309

Description

MyBB Recent threads 17.0 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by creating threads with crafted subject lines. Attackers can create threads with script tags in the subject parameter to execute arbitrary JavaScript in the browsers of all users viewing the index page.

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CVSS v3.1 Score

7.2

HIGH

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

EPSS — Exploit Prediction

0.0003

Probability of exploitation

0.07%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
dragonexpert	recent_threads_on_index	All

References

Exploits

https://www.exploit-db.com/exploits/44420

Other References

https://community.mybb.com/mods.php?action=view&pid=191 https://www.vulncheck.com/advisories/mybb-recent-threads-persistent-cross-site-scripting

Frequently Asked Questions

What is CVE-2018-25309? +

MyBB Recent threads 17.0 contains a persistent cross-site scripting vulnerability that allows attackers to inject malicious scripts by creating threads with crafted subject lines. Attackers can create threads with script tags in the subject parameter to execute arbitrary JavaScript in the browsers of all users viewing the index page. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2018-25309? +

CVE-2018-25309 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0003, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2018-25309? +

CVE-2018-25309 affects products from dragonexpert, specifically: recent_threads_on_index. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2018-25309? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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