# Red Hat Enterprise Linux AppStream vulnerabilities

Source: https://junglewise.ai/threats/technologies/enterprise-linux-appstream  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/enterprise-linux-appstream.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 46 vulnerabilities in Red Hat Enterprise Linux AppStream: 0 in the last 7 days and 0 in the last 90 days, 10 of them critical and 0 exploited in the wild. The most recent, CVE-2026-44673, was published on 14 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 46 (10 critical, 0 exploited in the wild)

## About Red Hat Enterprise Linux AppStream

Enterprise Linux AppStream is Red Hat's repository of user-space applications for RHEL.

## Latest Red Hat Enterprise Linux AppStream vulnerabilities

- [CVE-2026-44673: CESNET libyang heap buffer overflow in lyb_read_string](https://junglewise.ai/threats/cve-2026-44673-cesnet-libyang-heap-buffer-overflow-in-lyb-read-string) (high, CVSS 7.5, published 14 May 2026)
- [CVE-2026-5172: dnsmasq heap out-of-bounds read in extract_addresses](https://junglewise.ai/threats/cve-2026-5172-dnsmasq-heap-out-of-bounds-read-in-extract-addresses) (high, CVSS 7.3, published 11 May 2026)
- [CVE-2026-4891: dnsmasq heap out-of-bounds read in DNSSEC validation](https://junglewise.ai/threats/cve-2026-4891-dnsmasq-heap-out-of-bounds-read-in-dnssec-validation) (medium, CVSS 5.3, published 11 May 2026)
- [CVE-2026-4890: dnsmasq infinite loop in DNSSEC NSEC parsing](https://junglewise.ai/threats/cve-2026-4890-dnsmasq-infinite-loop-in-dnssec-nsec-parsing) (high, CVSS 7.5, published 11 May 2026)
- [CVE-2026-7263: PHP DOMNode::C14N() denial of service via circular linked list](https://junglewise.ai/threats/cve-2026-7263-php-domnode-c14n-denial-of-service-via-circular-linked-list) (high, CVSS 7.5, published 10 May 2026)
- [CVE-2026-6104: PHP mbstring out-of-bounds read in mb_convert_encoding](https://junglewise.ai/threats/cve-2026-6104-php-mbstring-out-of-bounds-read-in-mb-convert-encoding) (critical, CVSS 9.1, published 10 May 2026)
- [CVE-2026-7568: PHP signed integer overflow in metaphone function](https://junglewise.ai/threats/cve-2026-7568-php-signed-integer-overflow-in-metaphone-function) (high, CVSS 7.5, published 10 May 2026)
- [CVE-2026-7262: PHP SOAP extension NULL pointer dereference in apache:Map decoder](https://junglewise.ai/threats/cve-2026-7262-php-soap-extension-null-pointer-dereference-in-apache-map-decoder) (high, CVSS 7.5, published 10 May 2026)
- [CVE-2026-25243: Redis RESTORE command invalid memory access leading to RCE](https://junglewise.ai/threats/cve-2026-25243-redis-restore-command-invalid-memory-access-leading-to-rce) (high, CVSS 8.8, published 5 May 2026)
- [CVE-2026-23631: Redis use-after-free in Lua scripting synchronization](https://junglewise.ai/threats/cve-2026-23631-redis-use-after-free-in-lua-scripting-synchronization) (high, CVSS 8.1, published 5 May 2026)
- [CVE-2026-5656: Wireshark path traversal in Configuration Profile import](https://junglewise.ai/threats/cve-2026-5656-wireshark-path-traversal-in-configuration-profile-import) (high, CVSS 7, published 1 May 2026)
- [CVE-2026-42198: PostgreSQL pgjdbc denial of service via unbounded SCRAM iterations](https://junglewise.ai/threats/cve-2026-42198-postgresql-pgjdbc-denial-of-service-via-unbounded-scram) (high, CVSS 7.5, published 29 Apr 2026)
- [CVE-2026-41316: Ruby ERB arbitrary code execution via deserialization guard bypass](https://junglewise.ai/threats/cve-2026-41316-ruby-erb-arbitrary-code-execution-via-deserialization-guard) (high, CVSS 8.1, published 24 Apr 2026)
- [CVE-2026-33116: Microsoft .NET infinite loop in XmlDecryptionTransform](https://junglewise.ai/threats/cve-2026-33116-microsoft-net-infinite-loop-in-xmldecryptiontransform) (high, CVSS 7.5, published 14 Apr 2026)
- [CVE-2026-32203: Microsoft .NET and Visual Studio stack overflow denial of service](https://junglewise.ai/threats/cve-2026-32203-microsoft-net-and-visual-studio-stack-overflow-denial-of-service) (high, CVSS 7.5, published 14 Apr 2026)
- [CVE-2026-32178: Microsoft .NET SMTP command injection in MailAddress parsing](https://junglewise.ai/threats/cve-2026-32178-microsoft-net-smtp-command-injection-in-mailaddress-parsing) (high, CVSS 7.5, published 14 Apr 2026)
- [CVE-2026-26171: Microsoft .NET denial of service via XML entity expansion](https://junglewise.ai/threats/cve-2026-26171-microsoft-net-denial-of-service-via-xml-entity-expansion) (high, CVSS 7.5, published 14 Apr 2026)
- [CVE-2026-4151: GIMP ANI file parsing integer overflow](https://junglewise.ai/threats/cve-2026-4151-gimp-ani-file-parsing-integer-overflow) (high, CVSS 7.8, published 11 Apr 2026)
- [CVE-2026-34078: Flatpak sandbox escape via symlink following in sandbox-expose](https://junglewise.ai/threats/cve-2026-34078-flatpak-sandbox-escape-via-symlink-following-in-sandbox-expose) (critical, CVSS 10, published 7 Apr 2026)
- [CVE-2026-21413: LibRaw heap buffer overflow in lossless_jpeg_load_raw](https://junglewise.ai/threats/cve-2026-21413-libraw-heap-buffer-overflow-in-lossless-jpeg-load-raw) (critical, CVSS 9.8, published 7 Apr 2026)
- [CVE-2026-34588: OpenEXR integer overflow in PIZ decoder leads to OOB read and write](https://junglewise.ai/threats/cve-2026-34588-openexr-integer-overflow-in-piz-decoder-leads-to-oob-read-and) (high, CVSS 7.8, published 6 Apr 2026)
- [CVE-2026-33983: FreeRDP denial of service in progressive_decompress_tile_upgrade](https://junglewise.ai/threats/cve-2026-33983-freerdp-denial-of-service-in-progressive-decompress-tile-upgrade) (medium, CVSS 6.5, published 30 Mar 2026)
- [CVE-2026-21710: Node.js denial of service via __proto__ header in req.headersDistinct](https://junglewise.ai/threats/cve-2026-21710-node-js-denial-of-service-via-proto-header-in-req-headersdistinct) (high, CVSS 7.5, published 30 Mar 2026)
- [CVE-2026-32748: Squid heap use-after-free in ICP request handling](https://junglewise.ai/threats/cve-2026-32748-squid-heap-use-after-free-in-icp-request-handling) (high, CVSS 7.5, published 26 Mar 2026)
- [CVE-2026-4371: Mozilla Thunderbird out of bounds read in IMAP parsing](https://junglewise.ai/threats/cve-2026-4371-mozilla-thunderbird-out-of-bounds-read-in-imap-parsing) (high, CVSS 7.4, published 24 Mar 2026)

## Most severe Red Hat Enterprise Linux AppStream vulnerabilities

- [CVE-2026-34078: Flatpak sandbox escape via symlink following in sandbox-expose](https://junglewise.ai/threats/cve-2026-34078-flatpak-sandbox-escape-via-symlink-following-in-sandbox-expose) (critical, CVSS 10, published 7 Apr 2026)
- [CVE-2026-2768: Mozilla Firefox and Thunderbird sandbox escape in IndexedDB](https://junglewise.ai/threats/cve-2026-2768-mozilla-firefox-and-thunderbird-sandbox-escape-in-indexeddb) (critical, CVSS 10, published 24 Feb 2026)
- [CVE-2026-21413: LibRaw heap buffer overflow in lossless_jpeg_load_raw](https://junglewise.ai/threats/cve-2026-21413-libraw-heap-buffer-overflow-in-lossless-jpeg-load-raw) (critical, CVSS 9.8, published 7 Apr 2026)
- [CVE-2026-23884: FreeRDP use after free in GDI offscreen bitmap deletion](https://junglewise.ai/threats/cve-2026-23884-freerdp-use-after-free-in-gdi-offscreen-bitmap-deletion) (critical, CVSS 9.8, published 19 Jan 2026)
- [CVE-2025-67268: gpsd heap-based out-of-bounds write in NMEA2000 driver](https://junglewise.ai/threats/cve-2025-67268-gpsd-heap-based-out-of-bounds-write-in-nmea2000-driver) (critical, CVSS 9.8, published 2 Jan 2026)
- [CVE-2026-2762: Mozilla Firefox and Thunderbird integer overflow in JavaScript Standard Library](https://junglewise.ai/threats/cve-2026-2762-mozilla-firefox-and-thunderbird-integer-overflow-in-javascript) (critical, CVSS 9.8, published 24 Feb 2026)
- [CVE-2026-22853: FreeRDP heap buffer overflow in RDPEAR NDR array reader](https://junglewise.ai/threats/cve-2026-22853-freerdp-heap-buffer-overflow-in-rdpear-ndr-array-reader) (critical, CVSS 9.8, published 14 Jan 2026)
- [CVE-2026-33210: Ruby JSON format string injection in JSON parser](https://junglewise.ai/threats/cve-2026-33210-ruby-json-format-string-injection-in-json-parser) (critical, CVSS 9.1, published 20 Mar 2026)
- [CVE-2025-55130: Node.js permission model bypass via crafted symlinks](https://junglewise.ai/threats/cve-2025-55130-node-js-permission-model-bypass-via-crafted-symlinks) (critical, CVSS 9.1, published 20 Jan 2026)
- [CVE-2026-6104: PHP mbstring out-of-bounds read in mb_convert_encoding](https://junglewise.ai/threats/cve-2026-6104-php-mbstring-out-of-bounds-read-in-mb-convert-encoding) (critical, CVSS 9.1, published 10 May 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Red Hat technologies

- [Red Hat Enterprise Linux 9](https://junglewise.ai/threats/technologies/enterprise-linux-9): 146 vulnerabilities
- [Red Hat Enterprise Linux 10](https://junglewise.ai/threats/technologies/enterprise-linux-10): 140 vulnerabilities
- [Red Hat Enterprise Linux 8](https://junglewise.ai/threats/technologies/enterprise-linux-8): 132 vulnerabilities
- [Red Hat Keycloak](https://junglewise.ai/threats/technologies/red-hat-keycloak): 102 vulnerabilities
- [Red Hat Enterprise Linux 7](https://junglewise.ai/threats/technologies/enterprise-linux-7): 68 vulnerabilities
- [Red Hat Enterprise Linux 6](https://junglewise.ai/threats/technologies/enterprise-linux-6): 56 vulnerabilities
- [Red Hat Build of Keycloak](https://junglewise.ai/threats/technologies/red-hat-build-of-keycloak): 55 vulnerabilities
- [Red Hat Ansible Automation Platform](https://junglewise.ai/threats/technologies/ansible-automation-platform-2): 44 vulnerabilities
- [Red Hat OpenShift Container Platform 4](https://junglewise.ai/threats/technologies/openshift-container-platform-4): 36 vulnerabilities
- [Red Hat Developer Hub](https://junglewise.ai/threats/technologies/developer-hub): 28 vulnerabilities
- [Red Hat Quay](https://junglewise.ai/threats/technologies/quay-3-12): 20 vulnerabilities
- [Red Hat Multicluster Global Hub](https://junglewise.ai/threats/technologies/multicluster-global-hub): 19 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Red Hat Enterprise Linux AppStream vulnerabilities", https://junglewise.ai/threats/technologies/enterprise-linux-appstream, 13 November 2026.