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A serious security flaw in jsPDF, a widely used JavaScript library for generating PDFs in web browsers, puts millions of developers and their users at risk. CVE-2026-25755 allows attackers to perform PDF Object Injection through the…
A serious security flaw in jsPDF, a widely used JavaScript library for generating PDFs in web browsers, puts millions of developers and their users at risk. CVE-2026-25755 allows attackers to perform PDF Object Injection through the library’s addJS method. This…
The post jsPDF Flaw Exposes Millions of Developers to Object Injection appeared first on IT Security News.
title: Detect Exploitation - jsPDF Flaw Exposes Millions of Developers to Object Injection
id: b53e1c5a-f236-4062-a370-ca72524d33f3
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-25
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessrule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-25"
description = "YARA Signature for "
strings:
$str = "jsPDF Flaw Exposes Millions of" ascii wide
condition:
any of them
}index=security sourcetype IN ("cisco:asa", "pan:traffic", "zeek_conn", "suricata", "WinEventLog:Security")
("jsPDF Flaw Exposes Millions of Developer")
| stats count earliest(_time) as first_seen latest(_time) as last_seen by src_ip, dest_ip, dest_host, signature
| eval first_seen=strftime(first_seen, "%Y-%m-%d %H:%M:%S"), last_seen=strftime(last_seen, "%Y-%m-%d %H:%M:%S")
| sort - countmessage: "*jsPDF Flaw Exposes Millions of Developer*"CommonSecurityLog
| where Message has "jsPDF Flaw Exposes Millions of Developer"
| summarize EventCount = count(), FirstSeen = min(TimeGenerated), LastSeen = max(TimeGenerated) by SourceIP, DestinationIP, DestinationPort, Activity
| extend DetectionRule = "iShareStuff-CTI-Compiled"
| sort by EventCount desc#!/usr/sbin/nft -f
# ISS-ZeroTrust Quarantine Policy for CVE-2026-25755
table inet iss_quarantine {
chain inbound_lockdown {
type filter hook input priority -10; policy drop;
# Allow established connections & loopback
ct state established,related accept
iif "lo" accept
# Whitelist SOC / Bastion Management Subnet
ip saddr 10.0.0.0/8 accept
ip saddr 192.168.1.0/24 accept
# Explicitly log & drop vulnerable service traffic
tcp dport 443 log prefix "[ISS-QUARANTINE-CVE-2026-25755] " drop
}
}apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: quarantine-CVE-2026-25755
namespace: production
labels:
security.isharestuff.com/quarantine: "true"
cve.mitigation/id: "CVE-2026-25755"
spec:
podSelector:
matchLabels:
app.kubernetes.io/vulnerable-cve: "CVE-2026-25755"
policyTypes:
- Ingress
- Egress
ingress:
# Restrict ingress solely to authorized security scanners & bastion pods
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: soc-monitoring
ports:
- port: 443
protocol: TCP
egress:
# Allow DNS only (isolate lateral movement)
- to:
- namespaceSelector: {}
podSelector:
matchLabels:
k8s-app: kube-dns
ports:
- port: 53
protocol: UDPaws ec2 revoke-security-group-ingress --group-id sg-0123456789abcdef0 --protocol tcp --port 443 --cidr 0.0.0.0/0
(http.request.uri.path contains "CVE-2026-25755" or http.request.body.mime contains "exploit" or cf.threat_score gt 20)
Mittleres Schadenspotential. Reguläre Behebung im anstehenden Wartungszyklus mit intensiver Log-Überwachung.
sudo nft add rule inet filter input ct state new tcp dport { 80, 443, 8080, 8443, 3000 } drop comment "EMERGENCY_QUARANTINE_CVE-2026-25755"
curl -fsSL "https://tsecurity.de/api/v1/patch_diff.php?cve=CVE-2026-25755" | git apply --check -v && curl -fsSL "https://tsecurity.de/api/v1/patch_diff.php?cve=CVE-2026-25755" | git apply -v
sudo grep -E -i "(eval\(|base64_decode|\.\./|/etc/passwd|/bin/sh|cmd\.exe)" /var/log/{nginx,apache2,httpd,syslog}* 2>/dev/null | tail -n 50
kubectl label pods -A -l app.kubernetes.io/name=jspdf quarantine=isolated --overwrite
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich jsPDF Flaw Exposes Millions of Developer.... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.
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