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CLSA-2026-1768299147
Vulnerability in libapache2-mod-php7.3 (CLSA-2026-1768299147)
Summary
vulnerability in libapache2-mod-php7.3 (CLSA-2026-1768299147). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `7.3.31-1~deb10u7+tuxcare.els3` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CLSA-2026-1768299147** has been found in libapache2-mod-php7.3.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade libapache2-mod-php7.3 to **7.3.31-1~deb10u7+tuxcare.els3** or later.
If unsure, ask your IT team or search "libapache2-mod-php7.3 CLSA-2026-1768299147" on the vendor's site.
CLSA-2026-1768299147 (libapache2-mod-php7.3) —
Patched: `7.3.31-1~deb10u7+tuxcare.els3` — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**A vulnerability** (unclassified) exists in libapache2-mod-php7.3.
📍 Affected scope
libapache2-mod-php7.3 — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **7.3.31-1~deb10u7+tuxcare.els3**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'libapache2-mod-php7.3' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'libapache2-mod-php7.3' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `libapache2-mod-php7.3` を grep し、稼働しているサービス・バージョンを把握する。
-
6Apply patch patch
Upgrade libapache2-mod-php7.3 to 7.3.31-1~deb10u7+tuxcare.els3ステージング環境で 7.3.31-1~deb10u7+tuxcare.els3 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 3 で見つけた異常検知の続報チェックを含めること。
-
7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
TuxCare:Debian:10
libapache2-mod-php7.3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
libphp7.3-embed
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-bcmath
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-bz2
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-cgi
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-cli
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-common
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-curl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-dba
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-dev
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-enchant
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-fpm
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-gd
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-gmp
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-imap
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-interbase
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-intl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-json
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-ldap
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-mbstring
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-mysql
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-odbc
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-opcache
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-pgsql
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-phpdbg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-pspell
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-readline
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-recode
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-snmp
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-soap
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-sqlite3
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-sybase
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-tidy
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-xml
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-xmlrpc
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-xsl
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]
TuxCare:Debian:10
php7.3-zip
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.3.31-1~deb10u7+tuxcare.els3"}]}]