OESA-2026-2833 python-zeroconf security update

Pure Python Multicast DNS Service Discovery Library Bonjour/Avahi compatible Security Fixes: readcharacterstring and readstring in src/zeroconf/protocol/incoming.py sliced self.dataself.offset : self.offset + length and advanced self.offset by the declared length without checking it against...

OESA-2026-2832 python-zeroconf security update

Pure Python Multicast DNS Service Discovery Library Bonjour/Avahi compatible Security Fixes: readcharacterstring and readstring in src/zeroconf/protocol/incoming.py sliced self.dataself.offset : self.offset + length and advanced self.offset by the declared length without checking it against...

openSUSE 16 Security Update : python-zeroconf (openSUSE-SU-2026:21175-1)

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21175-1 advisory. Changes in python-zeroconf: - CVE-2026-47180: zeroconf has unbounded recursion in DNS compression-pointer decoder that allows LAN-local denial o...

Security update for python-zeroconf (moderate)

openSUSE security update: security update for python-zeroconf ------------------------------------------------------------- Announcement ID: openSUSE-SU-2026:21175-1 Rating: moderate References: bsc1268235 bsc1268341 bsc1268342 bsc1268343 bsc1268388 Cross-References: CVE-2026-47180 CVE-2026-47183...

OPENSUSE-SU-2026:21175-1 Security update for python-zeroconf

This update for python-zeroconf fixes the following issues: Changes in python-zeroconf: - CVE-2026-47180: zeroconf has unbounded recursion in DNS compression-pointer decoder that allows LAN-local denial of service bsc1268341 - CVE-2026-47183: zeroconf: Unbounded exception-dedup state retains pack...

GHSA-QC2X-6F54-M6H9 zeroconf: Unvalidated rdlength in record payload readers allows LAN-local cache corruption via crafted mDNS packet

Impact readcharacterstring and readstring in src/zeroconf/protocol/incoming.py sliced self.dataself.offset : self.offset + length and advanced self.offset by the declared length without checking it against self.datalen. Python's slice silently returns fewer bytes when the end index runs past the...

autonet-computer (>=0.1.2 <=0.1.3), cir1-hldns (=1.6.14) +35 more potentially affected by CVE-2026-48487 via zeroconf (>=0.140.1 <=0.149.12)

zeroconf PYPI version =0.140.1, =0.1.2, =2025.2.0, =2026.5.0, =2026.5.0, =0.1.0, =3.0.0, =0.0.1, =1.0.0, =0.2.9, =0.6.0 - matrix-alt-cameras =0.0.1 and more Source cves: CVE-2026-48487 Source advisory: OSV:GHSA-QC2X-6F54-M6H9...

adb-wifi-qr (=0.2.0), autonet-computer (>=0.1.2 <=0.1.3) +77 more potentially affected by CVE-2026-48487 via zeroconf (>=0.102.0 <=0.149.12)

zeroconf PYPI version =0.102.0, =0.1.2, =0.4.3.0, =1.4.0, =0.3.0, =1.1.0, =0.0.11, =0.1.24, =0.2.6, =2023.9.0, =0.1.688, =0.1.754 and more Source cves: CVE-2026-48487 Source advisory: SNYK:PYTHON-ZEROCONF-17423205...

Improper Handling of Length Parameter Inconsistency

Overview zeroconf is a Pure Python Multicast DNS Service Discovery Library Bonjour/Avahi compatible Affected versions of this package are vulnerable to Improper Handling of Length Parameter Inconsistency via the readcharacterstring and readstring functions. An attacker can inject malicious...

zeroconf: Unvalidated rdlength in record payload readers allows LAN-local cache corruption via crafted mDNS packet

Impact readcharacterstring and readstring in src/zeroconf/protocol/incoming.py sliced self.dataself.offset : self.offset + length and advanced self.offset by the declared length without checking it against self.datalen. Python's slice silently returns fewer bytes when the end index runs past the...

python311-zeroconf-0.149.16-1.1 on GA media (moderate)

python311-zeroconf-0.149.16-1.1 on GA media Announcement ID: openSUSE-SU-2026:11036-1 Rating: moderate Cross-References: CVE-2026-48487 Affected Products: openSUSE Tumbleweed An update that solves one vulnerability can now be installed. Description: These are all security issues fixed in the...

PT-2026-49728

Name of the Vulnerable Software and Affected Versions zeroconf versions prior to 0.149.16 Description An issue exists where the functions read character string and read string in src/zeroconf/ protocol/incoming.py advance the self.offset by a declared length without verifying it against self. dat...

OPENSUSE-SU-2026:11036-1 python311-zeroconf-0.149.16-1.1 on GA media

These are all security issues fixed in the python311-zeroconf-0.149.16-1.1 package on the GA media of openSUSE Tumbleweed...

autonet-computer (>=0.1.2 <=0.1.3), cir1-hldns (=1.6.14) +35 more potentially affected by CVE-2026-48045 via zeroconf (>=0.140.1 <=0.148.0)

zeroconf PYPI version =0.140.1, =0.1.2, =2025.2.0, =2026.5.0, =2026.5.0, =0.1.0, =3.0.0, =0.0.1, =1.0.0, =0.2.9, =0.6.0 - matrix-alt-cameras =0.0.1 and more Source cves: CVE-2026-48045 Source advisory: OSV:GHSA-9663-MQMP-P9MM...

adb-wifi-qr (=0.2.0), autonet-computer (>=0.1.2 <=0.1.3) +77 more potentially affected by CVE-2026-48045 via zeroconf (>=0.102.0 <=0.148.0)

zeroconf PYPI version =0.102.0, =0.1.2, =0.4.3.0, =1.4.0, =0.3.0, =1.1.0, =0.0.11, =0.1.24, =0.2.6, =2023.9.0, =0.1.688, =0.1.754 and more Source cves: CVE-2026-48045 Source advisory: SNYK:PYTHON-ZEROCONF-17318192...

GHSA-9663-MQMP-P9MM python-zeroconf: Unbounded TC-deferred queue allows LAN-local memory exhaustion via spoofed-source flood

Impact AsyncListener.handlequeryordefer retained every truncated TC-bit incoming query in self.deferredaddr and armed a per-addr timer in self.timersaddr that flushed the reassembled query within 500 ms RFC 6762 §18.5. Neither the per-addr list nor the number of distinct addr keys was capped, and...

Allocation of Resources Without Limits or Throttling

Overview zeroconf is a Pure Python Multicast DNS Service Discovery Library Bonjour/Avahi compatible Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the AsyncListener.handlequeryordefer function. An attacker can exhaust system memory and...

PT-2026-48689

Name of the Vulnerable Software and Affected Versions zeroconf versions prior to 0.149.12 Description An unauthenticated host on the local link can cause a denial of service by streaming byte-distinct mDNS queries with the TC-bit truncation flag set to the AsyncListener.handle query or defer...

zeroconf has unbounded DNS record cache that allows LAN-local memory exhaustion via multicast flood

Impact DNSCache.asyncadd inserted every response record into cache, expirations, expireheap, and servicecache with no cap on entry count. The only pre-existing protection was a PTR TTL floor DNSPTRMINTTL = 1125 s, RFC 6762 §10, which actually prolonged attacker-injected records, and a periodic...

a2a-lite (>=0.1.0 <=0.2.2), adb-connect-qr (>=0.1.0 <=0.1.3) +568 more potentially affected by CVE-2026-47184 via zeroconf (>=0.140.1 <=0.149.3)

zeroconf PYPI version =0.140.1, =0.1.0, =0.1.0, =0.1.0, =1.0.2, =1.0.1, =0.0.1, =1.4.8, =2.6.28, =0.7.1, =0.0.1, =1.7.0, =0.2.38, =3.2.20 and more Source cves: CVE-2026-47184 Source advisory: OSV:GHSA-RFG2-PJW2-56X2...