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CVE-2018-25248

26
FAUCET Score

CVE-2018-25248 is a persistent cross-site scripting (XSS) vulnerability affecting MyBB Downloads Plugin version 2.0.3, allowing regular members to inject malicious scripts into the download title field. These scripts execute when an administrator validates the download, potentially leading to session hijacking, data theft, or further compromise of the administrative interface. It carries a CVSS v3.1 score of 7.2 (HIGH), indicating a significant risk with potential for low confidentiality and integrity impacts. Despite its severity, there is no evidence of active exploitation, public exploit code, or significant community discussion available for this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.3CPE matchmatch criteria
cpe:2.3:a:mybb:mybb_downloads:2.0.3:*:*:*:*:mybb:*:*

CVSS Data

CVSS version used by this source: 4.0

5.1MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
LOW
SS Integrity
LOW
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
13.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 1st percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

community.mybb.com / mods.php
Permissions RequiredProduct
exploit-db.com / exploits/44400
ExploitVDB Entry
vulncheck.com / advisories/mybb-downloads-plugin-persistent-xss-via-downloads-php
Third Party Advisory