Multiple Vulnerabilities in IBM API Connect
- Exploited
- No known exploitation
- Fix
- Fixed in 12.1.1.3
- Who is exposed
- Specific setups only
Do first: Upgrade to a fixed version: 12.1.1.3.
- Last modified
- FIRST's estimate of the chance attackers exploit it in the next 30 days, updated daily.What do these mean? →
- 0.44% · 38th percentile
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 17/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Remote attackers who have low-privilege login can exploit this flaw in IBM API Connect by tricking a user into a page that runs malicious JavaScript in the victim's browser, potentially reaching data in another user's session. The bug affects specific 10.0.8.x and 12.1.x releases of the product.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original description
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to execute arbitrary JavaScript in the victim's browser due to cross-site scripting. User-supplied input is not properly neutralized when a web page is updated, so script content could run in another user's session.
cve.now Index
- Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
- Exposure8/25Specific setups only, reachable over the network
- Reach?/20Unknown. No tracked technology or package matched
- Severity8.7/10CVSS 8.7
- No patch0/5No signal
What would change the score
- Would score about 67 if added to CISA KEV
- Would score about 62 if CISA's SSVC rates exploitation active
- Would score about 24 if CISA's SSVC rates it automatable
What to do
Upgrade to a fixed version: 12.1.1.3.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- IBM API Connect
From 12.1.0.0 · through 12.1.1.2; From 10.0.8.0 · through 10.0.8.12
Evidence 2
- Patch
- Patch
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-16709
Is CVE-2026-16709 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
The flaw is a cross-site scripting issue that lets a remote attacker who has an authenticated account run arbitrary JavaScript in another user's browser, inside that user's session.Source: ibm.com, cve.org
Which versions are affected by CVE-2026-16709?
API Connect: from 12.1.0.0 through 12.1.1.2; from 10.0.8.0 through 10.0.8.12.Source: cve.now feed data