OPENSUSE-SU-2026:21660-1: tor security update

OPENSUSE-SU-2026:21660-1, released August 25, 2026, fixes 3 CVEs in tor (version 0.4.9.11-bp160.1.1). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

9.0

Base score, 0 to 10

Highest EPSS

0.0041

35th percentile

Priority of the 3 CVEs

Patch now 0
                                Urgent 1
                                High 2
                                Routine 0

Fixed package versions

Product	Release	Fixed in
tor	opensuse-leap 16.0	0.4.9.11-bp160.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-77638	tor: Tor before 0.4.9.11 is prone to a race condition where in just the right circumstances a rendezvous point could man-i...	9.0	0.0030	None reported
High	CVE-2026-77587	tor: Tor before 0.4.9.11 is prone to a use-after-free (and potential double free) of a conflux object when a recovery leg...	7.5	0.0041	None reported
High	CVE-2026-77584	tor: Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams	8.2	0.0025	None reported

Also fixes CVE-2026-77638

DEBIAN-CVE-2026-77638
tor on Debian 12.15 (bookworm), Debian 13.5 (trixie), Debian 14

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:21660-1

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