CVE•Published 2021-03-17•Modified 2026-07-09•0 articles on news•4 live references•NVD data
CVE-2020-28873Fluxbb · Fluxbb
Vulnerability data via NVD (ingested)
CVSS v3.1
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS percentile
55
Exploit Prediction Scoring System · top 45% of all CVEs
Description
Fluxbb 1.5.11 is affected by a denial of service (DoS) vulnerability by sending an extremely long password via the user login form. When a long password is sent, the password hashing process will result in CPU and memory exhaustion on the server.
Timeline
Published 2021-03-17
Modified 2026-07-09
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2020-28873Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Fluxbb Fluxbb" version:"1.5.11"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Fluxbb"HTTP body or banner mentions "Fluxbb" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2020-28873Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2020-28873Censys host search filtered to this CVE id.
grep.app
CVE-2020-28873Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2020-28873GitHub code search for direct mentions.
Google dork
"CVE-2020-28873" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2020-28873 on GitHub.
We haven't classified any articles referencing CVE-2020-28873 yet. The external references above still apply.