PrivateBin is an online pastebin where the server has zero knowledge of pasted data. In v1.5, PrivateBin introduced the YOURLS server-side proxy. The idea was to allow using the YOURLs URL shortener without running the YOURLs instance without authentication and/or exposing the authentication token to the public, allowing anyone to shorten any URL. With the proxy mechanism, anyone can shorten any URL pointing to the configured PrivateBin instance. The vulnerability allowed other URLs to be shortened, as long as they contain the PrivateBin instance, defeating the limit imposed by the proxy. This vulnerability is fixed in 1.7.4.
CVE-2024-39899
This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 72% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EPSS
- 46.3%
- KEV
- Not listed
Published
July 9, 2024
Last Modified
April 15, 2026
References (6)
- security-advisories@githubhttps://github.com/PrivateBin/PrivateBin/commit/0c4e810e6728f67d678458838d8430dfba4fcca4
- security-advisories@githubhttps://github.com/PrivateBin/PrivateBin/pull/1370
- security-advisories@githubhttps://github.com/PrivateBin/PrivateBin/security/advisories/GHSA-mqqj-fx8h-437j
- af854a3a-2127-422b-91ae-364da2661108https://github.com/PrivateBin/PrivateBin/commit/0c4e810e6728f67d678458838d8430dfba4fcca4
- af854a3a-2127-422b-91ae-364da2661108https://github.com/PrivateBin/PrivateBin/pull/1370
- af854a3a-2127-422b-91ae-364da2661108https://github.com/PrivateBin/PrivateBin/security/advisories/GHSA-mqqj-fx8h-437j
Affected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| privatebin/privatebin | 1.5.0 ... 1.7.3 (10 versions) | 1.7.4 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 45× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 118 total refreshes for this CVE.
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Frequently asked(5)
What is CVE-2024-39899?
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What is the CVSS score of CVE-2024-39899?
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Dependency Blast Radius
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