Cribl 4.20.1 Critical Maintenance Release Notification

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22 September 2026

Hello Emre,

To address issues discovered in the 4.20.0 release, we will perform a critical maintenance release upgrade to your organization on 22 September 2026. The primary issues addressed are related to a Worker Process memory leak when running Collection Jobs (CRIBL-45369 (https://url5419.cribl.cloud/ls/click?upn=u001.GTr64lO-2F188BoTbHRiQdnx7UhTsgFPfuzla-2Fu2QC19Uj8HIx-2FUHFBaTpoO4YYEcVrXIGxqiwflx8VjbcMHOMDRj0VmZ1qDFodR9ti0lwZqva19mIxcsio6vPdAzMO-2BfhMr6aAhSv5Qq3o-2FIj1S3a9IsF37u0TNb0fNXMGTo2LUAOVp-2BMGbhQOgSO9y-2BkNBMkM0Ungo-2B2S6U4EikIMt-2F6Ge066apPXWuRkLWWcqINpCFej9ZlpRvtk4cSch1yLy2envHPzfdV3DaUYX9fsPROGNWDU9258OArU0e9-2F8soq3PHknonT8d73wUgEvLCmfVxOk8215TDLZHe9sMLea-2F05-2F6CrHSj-2FhZYJ7IwdpmWpGZcMhOMOxuNH3xrT9aK13DQ70pq0kOEjcpdj9SS0ECYvdMBC43CtomXYesr0usMUnZ5sJCOCkUZ3kbDYHgM6-2FD-2B5rGU8wo5RgZDqqOh-2BXpY6qyaVt-2BAJ5KodQvUB3D5JSL6-2Br-2BnkJfiCd4IBULE85dzQ5SzVSH8KakJtPGtKKentPxzKoDSLTi70t2BNfcYgpcwwoFvFPONc61jF1NYbN-2FSwPXU8M2z8yFgg19O-2FAjFS2lXsGBrDqnPoFXvpHZycWCk2cU0gkaOy-2F7w4kqnPpsCUYI-2BSw6CzhVt9DOXqchhkA6hj8uF58dO0Cv1G-2Fjk6URuTyxivbUvGYaObdpavaEfiN8VTQUt5Y0jldSLfHE8Bo6dWc62CWDWehosoGIGll1Ba78n3D1n40JUD5SOfVE2u2lMeaHZxEbtatBlmKzMifpvucjL3vqnDSO-2Fm8NpF3DKOdoEGUeYuKv3lHR-2FfrMrjN388KzJclVrDdD3mnjftg-3D-3DYzS9_YAY-2BkisiQNcGVBKZbbC71cu1aU7Q5-2FxMMQA-2FrQF6IY9kyBym4T46yHQfrdjWlXjg9-2BkVi5RWxubGXPuqL18a2YDhbZF02ayZxRIGFDDv-2FUImaYzeDofVtXP4TIJmYb-2FRaGi0aGeMQMYkDHtjbeoffSEm4T18e1ojzXFxX0xS0fMWFO4hlJaItWqVMB4wvDm0f2w1sX1XZhxgTx0riI6NaP2ktYQ0VW-2BGMCOTWc7xnir446WHhjHQE-2FQ-2FG-2B87VrbFH-2FlAavm1UZJ2OudCp9oVVRT325jUMO45j9YFmCj2MfutEezZgNK8GelKgypESXGD-2BDnV4FyMfhhjh4kjgwoatw-3D-3D authentication for Microsoft Sentinel Destinations (CRIBL-45304 (https://url5419.cribl.cloud/ls/click?upn=u001.GTr64lO-2F188BoTbHRiQdnzmNfGexO3EoM7csr2A0s9OWmvRZnkd-2FNGNU3b-2FfYOLzqT0LLDCxAIYF4bdxbalThqJIHDdBepcaKMo0t0LDbKUHlrvNAU0G4-2FNdRrKmer4ReK1aJRJULnNPpUWrQqMgzEe2QEOzB-2FYi-2BAts8EnGLXbXnZfAwvpB11cl7SlcEo1ORZnSDo9vHTVqsLB041DlJP07j-2BA169uMrsFAt-2Ffx-2FXBe-2FjsqoqqhSzg7xu6OnMWkvbAWy3PV0GAUCv4Tc5LxYgIkouLc2Baj-2FKK4-2B-2FdDYE-2BTwtcj0N3ozX0-2BO4XJPXF6rxzunLB5nn2c0KghhygI5t33eGYhx9V1L2v0uRZ4jaisl5r54-2BGtXa25wgBTBJNLdxh5hDGBB88XdRp-2BEAGkjvoh4A8tNI1vD-2Fmx7cUG1bmGLsUJatiGm8DR7uojjgy2FqPALCH41w6bfep-2FDayfAAeUvttZXXBPEimzh-2BtSSZBKEARVI2QYOSLWTRM1C3jL-2BAPWpGUfcqnuQcVQvoYiD99PL5lTHv5nZ5XdMm1XrnP3coUmbvmRy1osjuI8Z-2BdhzRqBQrOazcvKcM33umP3p0WzNO7G-2BrSqYlgWMhJbdKnqkjIAUUG914t59JCHZ0AK0dZHkJHyhD3c3501ECdaU-2BcI34whOKTIOV7FQs5QeIvMj158xbfyUaHsmq7Zgmwtn-2BU8ZiuVkv7rCvStdBuFdeeg97gPZ3MHm3tiDSBblySWrmYyc8ao852mYUysLzEqYw1A6V25Yheu60jsKrCuTL-2BEGjTvr-2BgGEfVPnpJ4IekYt1wzPxLE1Z8kgt3EhKuykBatu7UYngE5h3I7cnX86Q-3D-3Dzsuc_YAY-2BkisiQNcGVBKZbbC71cu1aU7Q5-2FxMMQA-2FrQF6IY9kyBym4T46yHQfrdjWlXjg9-2BkVi5RWxubGXPuqL18a2YDhbZF02ayZxRIGFDDv-2FUImaYzeDofVtXP4TIJmYb-2FRaGi0aGeMQMYkDHtjbeoffSEm4T18e1ojzXFxX0xS0fMWFO4hlJaItWqVMB4wvDm0z-2B1IHqULVLgITl6q-2BVZDeHlfu7RTsMoD-2F3hbqTtMviiRVy7sQKSEfVlthPoKkuqk879ObRDe-2F4xrvsBhmqOL-2B1QxRuLB5amKk9criBwoczaG10L92j7yhRRX0cZ58KKOoXPeR2HsswVCdbe9JblXwg-3D-3D and configuring TLS settings for an Outpost Group (CRIBL-45296 (https://url5419.cribl.cloud/ls/click?upn=u001.GTr64lO-2F188BoTbHRiQdn5mSfkrpHr174B7D68GDFhST1I0yilMPhz-2Fw2kZE1ZKCfI8t8X-2FOWDj1dkrMdZ-2BllujHRU18b0pm7Eowftzx5j61rebCkC7IuXqhrnihw1W4VzsZqiot4Uytct8UOm2MMgOY5RbI1QDwXOQCG2IAGdGZA1xjVfamVNq-2BkTILj-2F4i9QnFoAYRh6L8-2BYz5N8ueNo-2BTX1xl2tl1Azb1QhB-2FMfscIOx1YnC031Apl-2B9eg8iqlmDwNSr4IFkuqUnon3mZwvfTbBzJZ-2BPeBqEi8cRj5CR2BR9tQGvAxFDVk5Fp6mYt81zhvuV37CUJPFsFna3pKEC2O0hMGkWTDiG3U5iHbBFYfysouV2mwcYFDrNcbK-2FCi67SpxGjGlVS9QxUSXP6e4gm84oLjO0OuEhpj4SFsVu45pLSuoI8GIiyqd0-2BVMU1PmZ4R1IjGYy6xvsAxUc4i7G1Gf5WVblbY7kqdXSSA95l7VZfZy3Q6mdCWZ-2FRAtSlvIEh6OmOg7WgXL-2BBjAMnb5ePacRodvwR-2FRavDFHmNjaWaOfjizl88ozs6qcrwpXk4mWBxsvO-2FWua5hkYpeehYgNKc6exd8OBna90nmsBYWYWp51KCIqABvOnU8LPOHVYtlqX150MhYb90bycI-2FM5YmrZOQRGOfaxlsbb8QJYJZ2i6H2UjY-2B5-2FZaQIsgkdxJ8jI8jx-2Fdc4tuWDGEIteccPTszetR-2F1fg9pXOyNfE-2FCy3tl12hXuc8HhuQ-2Fe8yWw6-2B-2FciP8YxpDYKMvwCv2fWOyf6DSViPZ4PBePiSVT33gPETW8R7d280ABfpKMVolvBVCBSyy-2BxW5ee0t0qrFpoMVQ-3D-3DS_PY_YAY-2BkisiQNcGVBKZbbC71cu1aU7Q5-2FxMMQA-2FrQF6IY9kyBym4T46yHQfrdjWlXjg9-2BkVi5RWxubGXPuqL18a2YDhbZF02ayZxRIGFDDv-2FUImaYzeDofVtXP4TIJmYb-2FRaGi0aGeMQMYkDHtjbeoffSEm4T18e1ojzXFxX0xS0fMWFO4hlJaItWqVMB4wvDm0juAVZvrfY3GpqUaxxCpIFgdmUat6K2yHt4Vq0O0QfGyBjwxEPd5xlx-2BgzwkGJy4927wZuhbZ546x9SsZrhQ9GEqHEJ0Tj7H-2B9gJaLcZJvNfZNFMoHXvSrQhJUVTz0EUn8n-2BKEwpspecjuPQqse46XA-3D-3D 

Upgrade Window

Your organization will be picked up for upgrade on a rolling basis between 12:00 UTC and 00:00 UTC (08:00 EDT and 20:00 EDT) beginning on 22 September 2026.

Once the upgrade starts, it'll take about 20 minutes to complete.

Action Required

Once your Cribl upgrade is finished, log in to your account and launch Cribl Stream or Cribl Edge (if applicable to your installation). You’ll only need to click Deploy if the upgrade requires it. The application interface will clearly indicate if deployment is necessary.

If you have not yet enabled auto-upgrade on your hybrid Workers, manually upgrade them to 4.20.1 to ensure compatibility.

Thank you for using Cribl.Cloud (https://url5419.cribl.cloud/ls/click?upn=u001.GTr64lO-2F188BoTbHRiQdn2xphJ3zUjFcQ17sNSmvKKNByt61wIwXvtGX8FgPAJHWtzIYPLP3V8jy4Dxp5WFrr0u1MIg-2FaiNRDczyXrotvF2Vz5ipF3Lt1zriG0A-2BjiSxqkzcebG2XOS1sLTjOKlzSs9-2F4KGkm-2BCWOZLopvtsgQCY1i7C6jlt1G9eKi7pbmFMWeBz60znurRxND3ULTYnaSY2NS5xEY0OqDS8WVfAA-2FhNlXDWOWy5t1JVu3KahBzAr0CrrBkNxRnQhlDZg60Mv48EDG1nJd4V42LkHA6-2BZ8HjN6jiZkcdkMECQAD0HI1-2F8sYXIgCkbz-2B6Vq6caVPGg0o8eWkJ2HLy4vY6G2Ocymff5J9Z-2BoaeKyKCIxd5nmc0k1HjZ2I7MHTcYHrmasWDJJEoAEukAZdrc8wWmxQL8uwp-2BeXN-2B13844IOxxH51K5GDAUwvSCnpJ7svp3ZOCcjKqofKMBhVVS9YHrIerN-2Bwu47UU5LYCdSf34trktsNHLNbmmfiTZ4d0IBTtUzZ4nT47gXgRLeofUCTsw-2F-2Fa-2FA4qIyi17u0jmwQObekfWEGGMi3zMrjfFzA6ArjTq-2Bfhux-2BHOnXKnJo3gKbJlWeHWLj1hW3uiC4pPbdNaSOkrvn6EIrRTO77t8LS2dfGSClfm4UmWWHYFMD-2FszEFqHD86ZH8yLluoWpLPc0vIkac3YgfY-2BiQElONzdCx-2B1FgiG-2FKqzY9X91xhL9D1TmyAc-2FESsS3OH4KEjAQh-2F0f70UMOqPrN9MvpC_YAY-2BkisiQNcGVBKZbbC71cu1aU7Q5-2FxMMQA-2FrQF6IY9kyBym4T46yHQfrdjWlXjg9-2BkVi5RWxubGXPuqL18a2YDhbZF02ayZxRIGFDDv-2FUImaYzeDofVtXP4TIJmYb-2FRaGi0aGeMQMYkDHtjbeoffSEm4T18e1ojzXFxX0xS0fMWFO4hlJaItWqVMB4wvDm0HHwRzM-2BCMtEM1T5HqjTKVdorzTh3AmkpwEywjyUi-2BuaJtQe63wdroOFeoOtuhWS7qs3ewsBAimb9UyQ2xu2HBKNAL0WpVLBsWkYP8HIN70VhGUHxfG8yEgM9t8jTdWsDsQ1uwm-2F-2FDsDcHcz6-2Ft3PWA-3D-3D If you have any questions, please contact Cribl Support (https://url5419.cribl.cloud/ls/click?upn=u001.GTr64lO-2F188BoTbHRiQdn456L5Kjm28hFPNVjLFzEaQexTpadE7UKFti-2Bblpz9t9iZNLTygdcR4oDO15oEGliYoIHo2t5EbQ346R2wqL1AaufIIcn3TBXTIR8qBk1b6t3RRSxTvkVgp3TtQcF976KKUTf-2Fkdf-2FOvhM-2BDJbVuq2GXHcVp50kLJEBZFDFbNogc-2B6kSsJOrdfYzczajk1Nh1c1dfyiRFqy7Bsf5YQwmPRijDRPrAteJKJtbaDO4iSwh9tf4VxhZtZAdppYqbkfVNwnSMYVU7F2dOh0Ni0Z1D-2B7aFucOHs3DTTvcoha6H5nXAaRYzDwlqnfHdR6Wfjux3CQvTMdV2HI7RTw5yKzI4nsQohpqr7zeBfD-2FqFChFwZVW9EJuXXO3KwYC2INz6dNhj6wIEp7Y1EopPH-2FbDzrqC-2FjewV3ppm60EPC7J280qJ8buOIZnnkY1UsVSgzRgkb0taXeod-2B4zMUBxVvYjd9IZzMT9z02AS8BBpSpjp6ahqg8cFpSG96w25OpAo6INcZuuJVouk9O-2FdUhl9IVQY-2B4wlqStw82VulKgGk9Q-2BWCEnuogjVP0NywNKwqhZuXP8MFhGqLB9sHGA6sGl2NX2rEsTWTso1uFPBzHwygbeIub-2Fm6D-2F0TGSHoEcergekwmS82pL3MYYDHTWc2BqoDpV375Ms5QNLAfkV7G3P20rDcEX404c9uM6NEk-2BDrtILKPtm0WU0XI8mhAnoNW3Ez5R6aIqEPWDOm56Xwho67-2B9hM6ND-2BDF0zMgrYsAFrs009YmYGA-3D-3D_ydr_YAY-2BkisiQNcGVBKZbbC71cu1aU7Q5-2FxMMQA-2FrQF6IY9kyBym4T46yHQfrdjWlXjg9-2BkVi5RWxubGXPuqL18a2YDhbZF02ayZxRIGFDDv-2FUImaYzeDofVtXP4TIJmYb-2FRaGi0aGeMQMYkDHtjbeoffSEm4T18e1ojzXFxX0xS0fMWFO4hlJaItWqVMB4wvDm0tLp-2FoD15d0sw-2BxDoglyue-2BteKdc104mA8J7h5ajqmlE0ote-2B-2Fk8GQZsGogOoNFIVtCpkJmHAtYKRwO3d23Yof2J0ChGSjL5yu4l2yXtzVwLPPWGRkRFcVrww4pS1AmDgzC4qtBlKPeDQNsliBi6T5g-3D-3D

Team Cribl

Accession

nse/cribl/2026-09-22/2156

From

Cribl Cloud · cloud-goats@cribl.cloud

Sent

22 September 2026 · 11:00 UTC