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FreeType bug bounty programs

freetype.org Updated

FreeType runs one public program: a Sorona bug bounty paying up to $5,000.

Top reward
$5,000
Sorona
Programs
1
1 pays cash
Targets in scope
10
2 types
Last change
None yet
Tracked since Nov 2026

Where to report

The one public program FreeType runs.

  • FreeType

    Sorona · Bug bounty

    Open

    Top reward

    $5,000
    Safe harbor
    Partial

Amounts are the top reward per severity in the currency each program pays. First response is the platform's measured average when it publishes one, else what the policy promises.

What is in scope

10 targets. 6 excluded.

  • https://freetype.org

    Web

  • Bitmap and colour formats: sbix, CBDT/CBLC, EBDT/EBLC, COLR/CPAL and embedded PNG glyphs

    Products and areas

  • Both funders take FreeType as a third-party component of a browser they ship. Mozilla pays for vulnerabilities in libraries vendored into its shipped client, where FreeType sits at modules/freetype2, and Chrome's VRP invites bugs in the third-party components it ships or uses.

    Products and areas

  • CFF, CFF2, Type 1, Type 42 and CID-keyed font handling, charstring interpretation included

    Products and areas

  • OpenType variations: fvar, gvar and avar, and the variable-font instancing machinery

    Products and areas

  • The auto-hinter, the smooth and monochrome rasterisers, and the outline and span code beneath them

    Products and areas

  • The core of the library: the object, stream and memory layers, the cache subsystem, and the SFNT table loader

    Products and areas

  • The legacy drivers FreeType still ships: BDF, PCF, PFR, Windows FNT and the Type 1 path

    Products and areas

  • TrueType outline parsing over glyf, loca, hmtx, cmap and kern, and the TrueType bytecode interpreter

    Products and areas

  • WOFF and WOFF2 decompression as reached from an @font-face rule

    Products and areas

No target matches. Try part of a host name, such as the company name.

Out of scope 6

Don't test these. A program can exclude a host another program covers; the program you report to decides.

  • Anything only reachable through a standalone fuzz harness with no browser path

  • Bugs in a distribution's system FreeType that you cannot show either browser reaching

  • Code neither browser ships, and features not enabled in a shipping build

  • Patch gaps: pointing out an upstream fix that has not yet landed in a vendored copy

  • Pure denial of service that merely crashes the browser, which Mozilla excludes in terms

  • Rendering-quality and hinting-accuracy bugs, which are correctness complaints rather than security findings

Recent changes

Reward and scope changes across every FreeType program, newest first.

No changes recorded yet. New targets and reward moves show up here and in the RSS feed.

Recent CVEs

Published vulnerabilities in FreeType products, from the NVD.

Search NVD
  • CVE-2026-23865 Medium

    An integer overflow in the tt_var_load_item_variation_store function of the Freetype library in versions 2.13.2 and 2.13.3 may allow for an out of bounds read operation when parsing HVAR/VVAR/MVAR tables in OpenType variable fonts. This issue is fixed in version 2.14.2.

  • CVE-2025-27363 High

    An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes

  • CVE-2025-23022 Medium

    FreeType 2.8.1 has a signed integer overflow in cf2_doFlex in cff/cf2intrp.c.

  • CVE-2022-27406 High

    FreeType commit 22a0cccb4d9d002f33c1ba7a4b36812c7d4f46b5 was discovered to contain a segmentation violation via the function FT_Request_Size.

  • CVE-2022-27404 Critical

    FreeType commit 1e2eb65048f75c64b68708efed6ce904c31f3b2f was discovered to contain a heap buffer overflow via the function sfnt_init_face.

  • CVE-2022-27405 High

    FreeType commit 53dfdcd8198d2b3201a23c4bad9190519ba918db was discovered to contain a segmentation violation via the function FNT_Size_Request.

  • CVE-2020-15999 Critical

    Heap buffer overflow in Freetype in Google Chrome prior to 86.0.4240.111 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

  • CVE-2015-9382 Medium

    FreeType before 2.6.1 has a buffer over-read in skip_comment in psaux/psobjs.c because ps_parser_skip_PS_token is mishandled in an FT_New_Memory_Face operation.

About this page

This page gathers every public program listed under freetype.org: platform programs, self-hosted policies and security.txt contacts. Each program's own policy decides what is in scope and what it pays; check it before you test.

Something wrong or missing? Report a correction.