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Vulnerability record · CVE-2011-2769 · published 23 December 2011

CVE-2011-2769: Tor information exposure vulnerability

Tor · Tor

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.

4.3 CVSS 2.0 Medium EPSS 1.1% · top 34.7% CWE-200 · Information exposure
4.3CVSS 2.0 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
16 Jun 2026Last modified by NVD

Description

Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command field of a cell within an OR connection that it initiated, which allows remote relays to enumerate bridges by using these values.

AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.debian.org/security/2011/dsa-2331
https://blog.torproject.org/blog/tor-02234-released-security-patches PatchVendor Advisory
http://www.debian.org/security/2011/dsa-2331
https://blog.torproject.org/blog/tor-02234-released-security-patches PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2011-2769), CISA KEV, FIRST EPSS (scores of 2026-10-01). This page is refreshed as NVD updates the record.