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Bug bounty reports15,219

Publicly disclosed HackerOne reports, with the platform's own outcome and severity.

Program:Tor
Status
Severity
Weakness
Year:2017
Clear
Bounty paid3
Access stated
Access needed
Technique
Clear filters26 of 15,219 reports
Disclosed bug bounty reports
ReportStatusWeaknessSeverityDisclosedBountyVotes
Linux TBB SFTP URI allows local IP disclosureAnalysed#253429ValidInformation DisclosureCritical2017-10-25$3,00071
Scrollbar Width permits detecting browser platformAnalysed#252580ValidInformation DisclosureLow2017-10-20–29
Access to local file system using javascript#258630ValidMisconfiguration and Insecure DesignHigh2017-11-18–15
[Android org.torproject.android] Possible to force list of bridges#252626InformativeAccess ControlHigh2017-08-21–13
16 instances where return value of OpenSSL i2d_RSAPublicKey is discarded -- might lead to use of uninitialized memory#142773ValidInformation Disclosure–2017-11-26–11
languagechange event fires simultaneously on all tabs#257942ValidInformation DisclosureLow2017-10-19$10010
Simple CSS line-height identifies platform#256647ValidInformation DisclosureLow2017-10-20–10
Use-after-free during XML transformations (MFSA-2016-27)#126797InformativeMemory Corruption–2017-10-21$30010
[tor] pre-emptive defenses, potential vulnerabilities#115686ValidMisconfiguration and Insecure Design–2017-11-26–8
[tor] libevent dns OOB read#115702ValidMemory Corruption–2017-10-19–7
[tor] control connection pre-auth DoS (infinite loop) with --enable-bufferevents#113424ValidDenial of Service–2017-10-19–7
potential memory corruption in or/buffers.c (particularly on 32 bit)#163459ValidMemory Corruption–2017-10-19–6
Heap corruption via memarea.c#138025ValidMemory Corruption–2017-10-19–6
Overreads/overcopies in torsocks#126598ValidMemory Corruption–2017-10-19–6
libevent (stack) buffer overflow in evutil_parse_sockaddr_port#112784ValidMemory Corruption–2017-10-19–6
[tor] libevent dns remote stack overread vulnerability#112632ValidMemory Corruption–2017-10-19–6
smartlist_add, smartlist_insert (may) cause heap corruption as a result of inadequate checks in smartlist_ensure_capacity#112386ValidMemory Corruption–2017-10-19–6
Preferred language option fingerprinting issue in Tor Browser#281597InformativeInformation DisclosureLow2017-10-24–3
Use of uninitialized value in networkstatus_parse_vote_from_string (src/or/routerparse.c:3533)#276253InformativeMemory CorruptionNone2017-10-31–2
Enforce minimum master password complexity#280282N/AAuthenticationMedium2017-10-19–1
Use of uninitialized value in memarea_strdup (src/common/memarea.c:369)#274997InformativeMemory Corruption–2017-10-25–1
Uncloaking hidden services and hidden service users#268113InformativeCryptography–2017-10-20–1
Stack overflow in UnbindFromTree (browser can be crashed remotely)#264481InformativeMemory CorruptionHigh2017-10-02–1
Cross-domain linkability when system time changed in Tor Browser#282339InformativeInformation DisclosureLow2017-10-26––
Crashes/Buffer at 0x2C0086,name=PBrowser::Msg_Destroy#281682InformativeMemory CorruptionMedium2017-10-24––
Sql query disclosure,#267922InformativeInformation DisclosureLow2017-09-18––

Status and severity are HackerOne's. “Access stated” is what the title says; “Access needed” and techniques come from CyberSIXT's analysis of the public report (4,182 analysed so far), which can be wrong. Data as of 2026-11-15.