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Red Hat Security Advisory

RHSA-2026:82939

Red Hat Update Infrastructure 5.3 security update

Released 2026-10-14 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 34 records

TI-2026-10231 CVE-2026-11856 · GHSA-9crq-qh8v-6xmm

cross-origin Digest auth state leak

Priority HIGH 82

Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, mak…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00688 Published 2026-07-03 Partial fix · 8.14.2, 8.16.1 +1 CWE-294
TI-2026-07844 CVE-2026-8924 · GHSA-hm6c-rc5h-32m9

trailing dot domain super cookie

Priority HIGH 80

A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set "super cookies" that bypass the Public Suffix List check.

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00661 Published 2026-07-03 Partial fix · 8.14.2, 8.16.1 +1 CWE-201
TI-2026-65598 CVE-2026-103111 · GHSA-mq4r-p73m-gphj

Out-of-bounds write in PCRE2

Priority HIGH 66

PCRE2 before 10.49, when there is an attacker-controlled regular expression and certain JIT API usage, allows an out-of-bounds write with arbitrary data.

CVSS 3.1HIGH 7.6 Network Low privileges No interaction EPSS 0.00269 Published 2026-09-30 Partial fix · 10.49 CWE-787
TI-2026-60391 CVE-2026-89157 · GHSA-797w-fgfq-r75v

Integer overflow in PCRE2

Priority HIGH 66

PCRE2 before 10.48, on 32-bit platforms, has a pcre2_pattern_convert out-of-bounds write when an attacker can provide a large pattern.

CVSS 3.1HIGH 7.4 Network No auth No interaction EPSS 0.00348 Published 2026-09-11 Partial fix · 10.48 CWE-190
TI-2026-60393 CVE-2026-89160 · GHSA-cv45-8fc2-7w58

Out-of-bounds read in PCRE2

Priority MEDIUM 62

PCRE2 before 10.48 has a pcre2_match out-of-bounds read during the PCRE2_MATCH_INVALID_UTF matching of an invalid UTF subject.

CVSS 3.1MEDIUM 6.5 Network No auth No interaction EPSS 0.00268 Published 2026-09-11 Partial fix · 10.48 CWE-125
Priority MEDIUM 45

Expat through 2.8.3 contains a denial of service vulnerability caused by quadratic algorithmic complexity in the storeAtts() function in xmlparse.c, where processing N specified attributes with non-normalized values trig…

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00742 Published 2026-08-18 Partial fix CWE-407
Priority MEDIUM 44

Expat before 2.8.5 fails to validate that a high surrogate in UTF-16 input is followed by a low surrogate, allowing malformed UTF-16 sequences to be accepted.

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00403 Published 2026-09-19 Partial fix · 2.8.5 CWE-176
Priority MEDIUM 43

Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through.

CVSS 3.1HIGH 8.2 Network No auth No interaction EPSS 0.00831 Published 2026-09-29 Partial fix · 4.0.3, 3.6.5 +5 CWE-125
Priority MEDIUM 42

PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purp…

CVSS 3.1HIGH 8.2 Network No auth No interaction EPSS 0.00425 Published 2026-09-05 Partial fix · 10.48 CWE-424
Priority MEDIUM 40

A flaw was found in libxml2 with Python bindings enabled.

CVSS 3.1HIGH 8.5 Network Low privileges No interaction EPSS 0.00658 Published 2026-09-08 Partial fix · 2.12.5-10.el10_2.4, 2.12.5-9.el10_0.9 +43 CWE-763
Priority MEDIUM 40

A remote, unauthenticated TLS client can make a server crash or call through a freed pointer if its sni_callback assigns a different context to SSLSocket.context (the documented way to select a certificate per server nam…

CVSS 4.0CRITICAL 9.2 Network No auth No interaction EPSS 0.00524 Published 2026-09-30 Partial fix · 3.10.22, 3.11.17 +4 CWE-416
TI-2026-00582 CVE-2026-0799 · GHSA-w3r6-8g24-54m5

OOBR and OOBW in libpcap before 1.10.7

Priority LOW 36

In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value.

CVSS 3.1HIGH 8.7 Local Low privileges No interaction EPSS 0.00108 Published 2026-09-05 Partial fix · 1.10.7 CWE-125
Priority LOW 35

In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00157 Published 2026-09-05 Partial fix · 2.15.4 CWE-122
Priority LOW 33

In xmlIO in libxml2 before 2.15.4, an inconsistency in xmlOutputWriteCallback and xmlBufUse causes negative lengths to reach write callbacks, aka a lack of a check for integer overflow before calling writecallback.

CVSS 3.1HIGH 7.3 Local Low privileges No interaction EPSS 0.00194 Published 2026-09-05 Partial fix · 2.15.4 CWE-192
Priority LOW 29

When expanding paths that begin with a tilde (~) followed by a username, the internal parse_tilde function extracts the username to determine the user's home directory.

CVSS 4.0MEDIUM 6.6 Network No auth No interaction EPSS 0.0022 Published 2026-08-10 Partial fix CWE-121
TI-2026-60390 CVE-2026-89156 · GHSA-p3mm-8g7f-gg7r

Out-of-bounds read in PCRE2

Priority LOW 26

PCRE2 before 10.48 has a pcre2_match out-of-bounds read after a JIT fallback when an attacker can provide invalid UTF data.

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.00294 Published 2026-09-11 Partial fix · 10.48 CWE-125
Priority LOW 26

Converting crafted EUC_JISX0213 input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.3 to 2.44 may result in the converter making no progress, causing the calling…

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.00358 Published 2026-09-15 Partial fix CWE-835
Priority LOW 26

Converting crafted SHIFT_JISX0213 input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.3 to 2.44 may result in the converter making no progress, causing the calli…

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.00358 Published 2026-09-15 Partial fix CWE-835
Priority LOW 25

Calling tdelete on a sufficiently deep tree in the GNU C Library version 2.1 to 2.44 may write one pointer past the end of an alloca-allocated array on the stack, which may crash the application.

CVSS 3.1MEDIUM 5.6 Network No auth No interaction EPSS 0.00226 Published 2026-09-14 Partial fix CWE-121
TI-2026-29299 CVE-2026-40553 · GHSA-3j4c-7g5m-7rg5

Stack-based buffer overflow in gawk

Priority LOW 23

Buffer overflow vulnerability has been found in "extension/readdir.c" program file of gawk (ftype() routine).

CVSS 4.0MEDIUM 5.1 Local No auth No interaction EPSS 0.00291 Published 2026-07-13 Partial fix CWE-121
TI-2026-29219 CVE-2026-40467 · GHSA-wj49-xjpv-3f4m

Use after free in gawk

Priority LOW 23

Use After Free vulnerability has been found in "io.c" program file of gawk (do_getline_redir() routine).

CVSS 4.0MEDIUM 5.1 Local No auth No interaction EPSS 0.00213 Published 2026-07-13 Partial fix CWE-416
TI-2026-15108 CVE-2026-18374 · GHSA-qg52-8pr2-xj9v

Out-of-bounds write in GNU glibc

Priority LOW 21

Passing an effectively empty string to the `,ccs=` syntax extension of the mode argument in the `fopen` function in the GNU C Library version 2.45 or earlier may result in a heap buffer overflow when the mode string inpu…

CVSS 3.1MEDIUM 4.9 Local No auth No interaction EPSS 0.00144 Published 2026-08-27 Partial fix · 2.45 CWE-787
TI-2026-29220 CVE-2026-40468 · GHSA-c5xj-c73w-hcgm

Heap buffer overflow in gawk

Priority LOW 11

Integer overflow vulnerability has been found in "builtin.c" program file of gawk.

CVSS 4.0LOW 2.1 Local No auth No interaction EPSS 0.00201 Published 2026-07-13 Partial fix CWE-190
Priority LOW 10

Calling wordexp with WRDE_APPEND in the GNU C Library version 2.0 to version 2.43 can cause the interface to return invalid memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.

CVSS 4.0LOW 2.1 Local No auth No interaction EPSS 0.00107 Published 2026-08-10 Partial fix · 2.43 CWE-908