Total
48 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2026-77584 | 1 Torproject | 1 Tor | 2026-09-16 | N/A | 7.0 HIGH |
| Tor before 0.4.9.10 did not reject a CONFLUX_LINK cell that arrives on a circuit which already has attached streams. A malicious client could send a RELAY_COMMAND_BEGIN before the CONFLUX_LINK on the same circuit, attaching an exit stream that would later end up orphan leaving a dangling circuit back-pointer and a use-after-free (UAF) when the circuit is freed. This is TROVE-2026-025. | |||||
| CVE-2026-77587 | 1 Torproject | 1 Tor | 2026-09-16 | N/A | 5.9 MEDIUM |
| 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 revives a conflux set whose last linked leg has already been closed. A malicious exit node could use this to crash a client. This is TROVE-2026-026. | |||||
| CVE-2026-77638 | 1 Torproject | 1 Tor | 2026-09-16 | N/A | 8.9 HIGH |
| Tor before 0.4.9.11 is prone to a race condition where in just the right circumstances a rendezvous point could man-in-the-middle (impersonate) the onion service that the client was trying to reach. | |||||
| CVE-2026-77639 | 1 Torproject | 1 Tor | 2026-09-08 | N/A | 5.3 MEDIUM |
| Tor before 0.4.9.9 was prone to a compression bomb bypass where an attacker could concatenate many gzip or zlib sub-streams, each just under the per-stream detection threshold, to avoid the compression bomb check entirely. This is TROVE-2026-022. | |||||
| CVE-2026-77640 | 1 Torproject | 1 Tor | 2026-09-08 | N/A | 3.7 LOW |
| tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1. A truncated stream never reaches Z_STREAM_END, causing zlib to return Z_BUF_ERROR with no input remaining, which buf_add_compress() mistook for a full output buffer and retried forever. Fixed by returning TOR_COMPRESS_ERROR in that case so the caller can abort cleanly. This is TROVE-2026-021. | |||||
| CVE-2026-77641 | 1 Torproject | 1 Tor | 2026-09-08 | N/A | 6.5 MEDIUM |
| tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUX_SWITCH cell fails. The return value of relay_send_command_from_edge() was ignored, so a send failure (which calls circuit_mark_for_close() and removes the leg via cfx_del_leg()) would go undetected, causing the caller to write to the now-freed current leg and resulting in a crash. This is TROVE-2026-017. | |||||
| CVE-2026-77642 | 1 Torproject | 1 Tor | 2026-09-08 | N/A | 7.5 HIGH |
| tor before 0.4.9.9 was prone to an out-of-bounds write when parsing a consensus or detached signature with unexpected signature digest type. Impact is minor for most Tor roles, but potentially major for directory authorities. This is TROVE-2026-019. | |||||
| CVE-2026-44603 | 1 Torproject | 1 Tor | 2026-06-17 | N/A | 3.7 LOW |
| Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007. | |||||
| CVE-2026-44602 | 1 Torproject | 1 Tor | 2026-06-17 | N/A | 3.7 LOW |
| Tor before 0.4.9.7 has a NULL pointer dereference when a CERT cell is received out of order, aka TROVE-2026-006. | |||||
| CVE-2026-44601 | 1 Torproject | 1 Tor | 2026-06-17 | N/A | 3.7 LOW |
| Tor before 0.4.9.7, when circuit queue memory pressure exists, can experience a client crash because of a double close of a circuit, aka TROVE-2026-009. | |||||
| CVE-2026-44600 | 1 Torproject | 1 Tor | 2026-06-17 | N/A | 3.7 LOW |
| Tor before 0.4.9.7 mishandles accounting of the conflux out-of-order queue during the clearing of a queue, aka TROVE-2026-010. | |||||
| CVE-2026-44599 | 1 Torproject | 1 Tor | 2026-06-17 | N/A | 3.7 LOW |
| Tor before 0.4.9.7 can attempt or accept BEGIN_DIR via conflux legs, aka TROVE-2026-008. | |||||
| CVE-2026-44597 | 1 Torproject | 1 Tor | 2026-06-17 | N/A | 3.7 LOW |
| Tor before 0.4.9.7 has an out-of-bounds read when an END, a TRUNCATE, or a TRUNCATED cell lacks a reason in its payload, aka TROVE-2026-011. | |||||
| CVE-2023-23589 | 3 Debian, Fedoraproject, Torproject | 3 Debian Linux, Fedora, Tor | 2026-06-17 | N/A | 6.5 MEDIUM |
| The SafeSocks option in Tor before 0.4.7.13 has a logic error in which the unsafe SOCKS4 protocol can be used but not the safe SOCKS4a protocol, aka TROVE-2022-002. | |||||
| CVE-2022-33903 | 1 Torproject | 1 Tor | 2026-06-17 | N/A | 7.5 HIGH |
| Tor 0.4.7.x before 0.4.7.8 allows a denial of service via the wedging of RTT estimation. | |||||
| CVE-2021-46702 | 2 Microsoft, Torproject | 2 Windows, Tor | 2026-06-17 | 2.1 LOW | 5.5 MEDIUM |
| Tor Browser 9.0.7 on Windows 10 build 10586 is vulnerable to information disclosure. This could allow local attackers to bypass the intended anonymity feature and obtain information regarding the onion services visited by a local user. This can be accomplished by analyzing RAM memory even several hours after the local user used the product. This occurs because the product doesn't properly free memory. | |||||
| CVE-2021-38385 | 1 Torproject | 1 Tor | 2026-06-17 | 5.0 MEDIUM | 7.5 HIGH |
| Tor before 0.3.5.16, 0.4.5.10, and 0.4.6.7 mishandles the relationship between batch-signature verification and single-signature verification, leading to a remote assertion failure, aka TROVE-2021-007. | |||||
| CVE-2021-34550 | 1 Torproject | 1 Tor | 2026-06-17 | 5.0 MEDIUM | 7.5 HIGH |
| An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-006. The v3 onion service descriptor parsing allows out-of-bounds memory access, and a client crash, via a crafted onion service descriptor | |||||
| CVE-2021-34549 | 1 Torproject | 1 Tor | 2026-06-17 | 5.0 MEDIUM | 7.5 HIGH |
| An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005. Hashing is mishandled for certain retrieval of circuit data. Consequently. an attacker can trigger the use of an attacker-chosen circuit ID to cause algorithm inefficiency. | |||||
| CVE-2021-34548 | 1 Torproject | 1 Tor | 2026-06-17 | 5.0 MEDIUM | 7.5 HIGH |
| An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-003. An attacker can forge RELAY_END or RELAY_RESOLVED to bypass the intended access control for ending a stream. | |||||