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CVE-2019-13973

29
FAUCET Score

CVE-2019-13973 is a critical arbitrary file upload vulnerability affecting LayerBB 1.1.3, allowing attackers to upload malicious PHP files due to unrestricted filename suffixes for custom logos. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there's minimal community discussion, the high FAUCET Risk Score of 78/100 indicates significant potential danger. This vulnerability is not currently listed on CISA's KEV catalog, suggesting no widespread active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
1.1.3CPE matchmatch criteria
cpe:2.3:a:layerbb:layerbb:1.1.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.75%
Probability of exploitation in next 30 days
EPSS Percentile
75.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0175 is in the 64th percentile among its peer group of 36,821 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

blog.topsec.com.cn / %E5%A4%A9%E8%9E%8D%E4%BF%A1%E5%85%B3%E4%BA%8Elayerbb-1-1-3-xss%E6%BC%8F%E6%B4%9E%E5%88%86%E6%9E%90
ExploitThird Party Advisory