Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
5 results
Sep 21, 2026Fluent Bit is a fast and lightweight logs, metrics, and traces processor for Linux, BSD, macOS, and Windows.CVE-2026-61674 · Other software · fluent · reported by GitHubCritical 9.2
Fluent Bit is a fast and lightweight logs, metrics, and traces processor for Linux, BSD, macOS, and Windows. From 0.11.0 until 5.0.8, plugins/out_forward/forward.c secure_forward_pong copies the server-controlled PONG[2] reason into the 32-byte stack buffer msg with memcpy without checking its MessagePack type or length. An attacker who controls or can impersonate an out_forward Secure Forward destination configured with Shared_Key or Empty_Shared_Key can send an oversized reason during the first handshake and overwrite stack control data. Protected builds reliably terminate, while builds without a stack canary or with a disclosure can allow remote code execution as the Fluent Bit process user. When the opt-in --supervisor mode is used, fork-only respawns preserve the canary and address layout, allowing repeated crash-or-survive probes to support code execution on a hardened build; ordinary exec-based or service-manager restarts do not preserve that state. This issue is fixed in version 5.0.8.
- Product
- fluent-bit
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 7, 2025An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the cfl_list_size in cfl_list.h:165.CVE-2025-29478 · Other software · Treasuredata · reported by MITREMedium 5.5
An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the cfl_list_size in cfl_list.h:165.
- Product
- Fluent BIT
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Apr 4, 2025An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the function consume_event.CVE-2025-29477 · Other software · Treasuredata · reported by MITREMedium 5.5
An issue in fluent-bit v.3.7.2 allows a local attacker to cause a denial of service via the function consume_event.
- Product
- Fluent BIT
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 26, 2024fluent-bit 2.2.2 contains a Use-After-Free vulnerability in /fluent-bit/plugins/custom_calyptia/calyptia.c.CVE-2024-26455 · Other software · fluentd · reported by MITREHigh 7.5
fluent-bit 2.2.2 contains a Use-After-Free vulnerability in /fluent-bit/plugins/custom_calyptia/calyptia.c.
- Product
- fluentbit
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jun 30, 2021Fluent Bit (aka fluent-bit) 1.7.0 through 1.7.4 has a double free in flb_free (called from flb_parser_json_do and flb_parser_do).CVE-2021-36088 · Other software · treasuredata · reported by MITRECritical 9.8
Fluent Bit (aka fluent-bit) 1.7.0 through 1.7.4 has a double free in flb_free (called from flb_parser_json_do and flb_parser_do).
- Product
- fluent_bit
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugs.chromium.orggithub.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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