# RHSA-2026:68334: flightctl security update

RHSA-2026:68334, released September 17, 2026, fixes 11 CVEs in flightctl (version 1.1.4-1.el10em). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-68334
- Platform: Linux
- Released: Sep 17, 2026
- Priority: High (Closes CVE-2026-42499, high severity)
- CVEs: 11, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:68334

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [flightctl](https://patchblox.com/security/data/product/linux/flightctl.md) | RHEL 10 | 1.1.4-1.el10em |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-42499](https://patchblox.com/security/data/cve/CVE-2026-42499.md) | High | Quadratic string concatenation in consumePhrase in net/mail | 8.8 | 0.0080 |  |
| [CVE-2026-39820](https://patchblox.com/security/data/cve/CVE-2026-39820.md) | High | Quadratic string concatentation in consumeComment in net/mail | 8.8 | 0.0078 |  |
| [CVE-2026-42504](https://patchblox.com/security/data/cve/CVE-2026-42504.md) | High | Quadratic complexity in WordDecoder.DecodeHeader in mime | 8.8 | 0.0056 |  |
| [CVE-2026-39831](https://patchblox.com/security/data/cve/CVE-2026-39831.md) | High | Invoking  bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh | 9.1 | 0.0048 |  |
| [CVE-2026-46597](https://patchblox.com/security/data/cve/CVE-2026-46597.md) | High | Invoking  byte arithmetic causes underflow and panic in golang.org/x/crypto/ssh | 7.5 | 0.0047 |  |
| [CVE-2026-33810](https://patchblox.com/security/data/cve/CVE-2026-33810.md) | High | Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509 | 9.1 | 0.0035 |  |
| [CVE-2026-81521](https://patchblox.com/security/data/cve/CVE-2026-81521.md) | High | flightctl: The MongoDB Go Driver's client-level bulk write operation may accept a caller-supplied database name containing a res... | 7.5 | 0.0024 |  |
| [CVE-2026-25681](https://patchblox.com/security/data/cve/CVE-2026-25681.md) | High | Invoking  incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html | 8.7 | 0.0022 |  |
| [CVE-2026-27136](https://patchblox.com/security/data/cve/CVE-2026-27136.md) | High | Invoking  duplicate attributes can cause XSS in golang.org/x/net/html | 8.7 | 0.0022 |  |
| [CVE-2026-42306](https://patchblox.com/security/data/cve/CVE-2026-42306.md) | High | docker.io: Moby is an open source container framework | 7.2 | 0.0010 |  |
| [CVE-2026-69153](https://patchblox.com/security/data/cve/CVE-2026-69153.md) | Routine | node-postcss: PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstra... | 5.3 | 0.0045 |  |

---

Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo