CVE-2026-6669
Missing upper bound on the key derivation iteration count accepted during SCRAM authentication to a backend server in PgBouncer through 1.25
CVSS
5.9
Medium
EPSS
—
KEV
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Exploit Today
0
0-100
Published: Sep 23, 2026 · Last modified: Sep 23, 2026 · CWE-400
Not enough EPSS history yet.
Missing upper bound on the key derivation iteration count accepted during SCRAM authentication to a backend server in PgBouncer through 1.25.2 allows a malicious or compromised PostgreSQL backend to cause uncontrolled CPU consumption in PgBouncer. The resulting key derivation cannot be interrupted in frontend builds such as PgBouncer. Because PgBouncer serves all clients from a single process, one backend can in this way stop it from serving traffic for every other database and client it is pooling, so the failure of a single backend is not contained.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-965417.5 HIG—
——0A denial-of-service flaw was found in gnome-remote-desktop. An unauthenticated remote attacker can open RDP connections without completing the handshake and retain the connection-throttling slots indefinitely because no pre-authentication handshake deadline is enforced. By exhausting the global connection limit, an attacker can prevent new RDP clients from connecting until a holding socket is closed.4hCVE-2026-618147.5 HIG—
——0Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks because each absorb call rescans the incomplete token from the start. A remote attacker who controls untrusted JSON input and its chunk sizes can exhaust CPU resources and cause denial of service in applications using AsyncParser. This issue is fixed in version 1.7.0.4hCVE-2026-777917.5 HIG—
——0Uncontrolled Resource Consumption vulnerability in Apache Tomcat during sending of WebSocket close message enabled a DoS attack.
This issue affects Apache Tomcat: from 11.0.0-M5 through 11.0.25, from 10.1.8 through 10.1.59, from 9.0.74 through 9.0.121.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.88 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.4hCVE-2026-866088.2 HIG10.0%
——3The WP Recipe Maker WordPress plugin before 10.8.2 does not have any authorisation check in one of its REST routes, nor does it bound what that route stores, allowing unauthenticated users to write unlimited data into any user's metadata and to permanently prevent that account, including an administrator's, from loading.5hCVE-2026-143218.2 HIG11.7%
——4The divi-dash WordPress plugin before 1.0.7 does not validate the source of the client IP address it uses for rate limiting and banning, allowing unauthenticated attackers to spoof arbitrary IP addresses in order to bypass rate limiting, ban chosen addresses from the feature, and grow a stored option without bound, resulting in denial of service.5hCVE-2026-917777.5 HIG41.1%
——12Forward-reference completion for @JsonIdentityInfo object IDs in FasterXML jackson-databind performs a linear scan of the pending-reference accumulator for every resolved ID. The affected paths are CollectionDeserializer.CollectionReferringAccumulator.resolveForwardReference() and the equivalent implementation in MapDeserializer. When a document first creates N unresolved object-ID references in an identity-enabled collection or map and then defines those same IDs in reverse order, completion performs on the order of N * (N + 1) / 2 identity comparisons, so a shallow document whose size grows linearly causes quadratic CPU work during deserialization. The reporter instrumented equals() calls on the ID class and measured exactly 2,003,000 comparisons at N = 2,000, against zero comparisons in the pending-reference lookup path for an equally sized control in which every reference was already resolved. The input requires no deep nesting and no syntactically unusual JSON. Exploitation requires an application that deserializes attacker-influenced JSON into an identity-enabled collection or map. The fix replaces the repeated linear lookup with a keyed pending-reference structure.8h