Stored cross-site scripting (XSS) in 1Panel-dev MaxKB up to version 2.6.1 allows authenticated remote attackers to inject malicious scripts via the Name argument in ChatHeadersMiddleware, requiring user interaction to trigger. The vulnerability has a low CVSS score (3.5) due to requiring authentication and user interaction, but XSS can lead to session hijacking or credential theft. Vendor-released patch version 2.8.0 addresses this issue.
Varnish Enterprise before version 6.0.16r12 is vulnerable to a workspace overflow denial of service attack that crashes the daemon through the headerplus.write_req0() VCL function. Unauthenticated remote attackers can craft HTTP requests with excessive header fields to trigger a panic and terminate the Varnish server, particularly impacting deployments using shared VCL through Varnish Controller. CVSS base score of 4.0 reflects low availability impact with high attack complexity, and no public exploit code or confirmed active exploitation has been identified.
Denial of service via workspace overflow in Varnish Cache 9 before 9.0.1 and Varnish Enterprise before 6.0.16r11 allows unauthenticated remote attackers to trigger daemon panic through HTTP/2 session upgrade with specific amounts of prefetched data. The vulnerability exploits improper buffer allocation during HTTP/1 to HTTP/2 transport upgrade, causing workspace exhaustion on subsequent pipelined fetch operations. EPSS score of 4.0 (low-to-medium risk) reflects attack complexity and limited scope (local availability impact only), though no public exploit code or active exploitation has been confirmed.
Integer underflow in libexif version 0.6.25 and earlier during Fuji and Olympus MakerNote decoding allows local attackers to crash applications or leak sensitive memory information. The vulnerability requires local access and specific user interaction (high complexity) but affects all applications linking libexif, creating a supply-chain exposure for image processing tools.
Integer overflow in libexif through 0.6.25 Nikon MakerNote handling allows local attackers on 32-bit systems to trigger crashes or read sensitive memory, requiring high attack complexity and no user interaction. This affects only 32-bit architectures due to the integer arithmetic involved; EPSS probability is low given the local-only attack vector and high complexity prerequisite, but patch availability is currently unconfirmed.
Varnish Cache 9.0.0 crashes (denial of service) when a remote client exploits timing between timeout_linger and timeout_idle to trigger HTTP/1 request pipelining that causes a workspace overflow in the refactored HTTP/2 architecture. The vulnerability stems from incomplete code path handling during workspace rollback in the recent non-blocking port, allowing prefetched data to exceed workspace_client boundaries and panic the daemon. Vendor-released patch: version 9.0.1. No public exploit code identified at time of analysis, but the attack requires only network access and careful timing, making real-world exploitation feasible for sophisticated attackers.