Greenshot Files

While working on Greenshot 1.4 to provide additional features and more stability, we didn't want to have you waiting for things you can already have now. So with 1.3.323 we want to stabilize Greenshot to make it more reliable for our users. We selectively picked improvements we already made in 1.4 and made them work for 1.3.

Most of the improvements were provided by the community and we are extremely grateful for their support! Besides that we appreciate every single help and interaction, some members of the community are even more outstanding, so a special thanks for @Christian-Schulz, @danrhodes and @FF-Brown they even combined their invested time to work, also with other contributors, on features and bugs together.

If you like Greenshot, please make sure you give us a star on https://github.com/greenshot/greenshot When companies want to support open source, one of their key criteria to select projects is the amount of stars on GitHub.

What's Changed

Security

• Fixed a security issue where TLS certificate validation was disabled process-wide, exposing OAuth tokens and plugin uploads (Imgur, Box, Dropbox, Flickr, Confluence, Jira) to man-in-the-middle attacks. Reported by @sondt99, @lihnucs, and @dungNHVhust; fixed in backport PR [#1122]. GHSA-q4w7-9m8v-53fm
• Fixed an out-of-bounds read that could cause denial of service when processing crafted CF_DIBV5 clipboard data. Reported by @hacker1984; fixed by @Lakritzator and @jklingen in commit 80ccbde9d. GHSA-4674-75g5-79mx
• Fixed server-side request forgery when opening crafted SVG files by preventing Svg.NET from resolving external resources and entities. Reported by @Zenquiem; fixed by @Lakritzator and @jklingen in commit 40de45d91. GHSA-mmr7-mfv6-wp78
• Updated vulnerable build and runtime dependencies: Inno Setup 6.2.1 to 6.2.2 (CVE-2025-15595) and log4net 2.0.15 to 3.3.0 (CVE-2026-40021) — by @jklingen in PR [#1455].

Bug Fixes

• Fixed a crash when opening the editor (issue #925) — by @danrhodes in PR [#1003]
• More graceful handling when saving to a locked/inaccessible file (issue #946) — by @danrhodes in PR [#986]
• Fixed a crash when changing the icon size in preferences (issue #1007) — by @danrhodes in PR [#1010]
• Fixed holding CTRL while resizing not working as expected (issue #1055) — by @danrhodes in PR [#1087]
• Fixed an error when making a capture (issue #1021) — by @danrhodes in PR [#1022]
• Fixed line thickness being able to go out of range (issue #1142) — by @danrhodes in PR [#1151]
• Fixed a race condition in editor layout updates (issue #1169) — by @danrhodes in PR [#1210]
• Fixed region capture crashes (issues #1153, #1019, #1031) — by @danrhodes in PR [#1154]
• Fixed the tray icon disappearing permanently on RemoteApp/RAIL sessions (issue #1324) — by @Lakritzator (Robin Krom) in PR [#1348]
• Fixed instabilities when changing the icon size, caused by disposing a shared font — by @Christian-Schulz in PR [#981]
• Fixed file format saving inconsistencies — by @Christian-Schulz in PR [#1024]
• Fixed multiple toast notification issues, including a cross-thread exception — by @overlord in PR [#1147]
• Fixed processing of OneDrive hotkey settings (issue #1170) — by @Lakritzator (Robin Krom)

New Features

• Added a configurable Border effect via a new setting in Greenshot.ini — by @weihongji in PR [#730] (their first contribution to Greenshot!)

Installer & Upgrades

• Improved the installer to remove additional leftover files/plugin directories from previous Greenshot versions — by @Lakritzator (Robin Krom) in PR [#1092]
• Greenshot 1.3 can now close automatically when the Greenshot 1.4 installer upgrades it via the Windows Restart Manager — by @Christian-Schulz in PR [#1109]

Technical Details

• Backport scope: Most bug fixes in this release were originally developed and merged into the 1.4 development line first, then selectively backported to release/1.3 for stabilization; see the individual attributions above for each original author.
• Release scope: This is the 10th stable release of the 1.3 series. Versions 1.3.319, 1.3.320, and 1.3.321 were intermediate builds; their changes are rolled into this release.
• Full Changelog: https://github.com/greenshot/greenshot/compare/v1.3.315...v1.3.322