No. Junglewise Threat Intelligence has no report of CVE-2020-26939 being exploited in the wild.
How severe is CVE-2020-26939?
Low severity, with a CVSS score of 3.1, published 22 April 2021.
Which products and versions are affected?
org.bouncycastle:bc-fips (Maven) ECOSYSTEM:introduced=0,fixed=1.0.2; org.bouncycastle:bcprov-ext-jdk15on (Maven) ECOSYSTEM:introduced=0,fixed=1.61; org.bouncycastle:bcprov-ext-jdk16 (Maven) ECOSYSTEM:introduced=0,fixed=1.61; org.bouncycastle:bcprov-jdk14 (Maven) ECOSYSTEM:introduced=0,fixed=1.61; and 4 more.
Is there a fix for CVE-2020-26939?
Yes. org.bouncycastle:bc-fips (Maven): upgrade to 1.0.2 or later; org.bouncycastle:bcprov-ext-jdk15on (Maven): upgrade to 1.61 or later; org.bouncycastle:bcprov-ext-jdk16 (Maven): upgrade to 1.61 or later; org.bouncycastle:bcprov-jdk14 (Maven): upgrade to 1.61 or later; org.bouncycastle:bcprov-jdk15 (Maven): upgrade to 1.61 or later; org.bouncycastle:bcprov-jdk15on (Maven): upgrade to 1.61 or later; org.bouncycastle:bcprov-jdk15to18 (Maven): upgrade to 1.61 or later; org.bouncycastle:bcprov-jdk16 (Maven): upgrade to 1.61 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2020-26939?
Check whether you run org.bouncycastle:bc-fips (Maven), org.bouncycastle:bcprov-ext-jdk15on (Maven), org.bouncycastle:bcprov-ext-jdk16 (Maven) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
org.bouncycastle:bc-fips (Maven): upgrade to 1.0.2 or later
# set org.bouncycastle:bc-fips to 1.0.2 in your pom.xml or build.gradle
org.bouncycastle:bcprov-ext-jdk15on (Maven): upgrade to 1.61 or later
# set org.bouncycastle:bcprov-ext-jdk15on to 1.61 in your pom.xml or build.gradle
org.bouncycastle:bcprov-ext-jdk16 (Maven): upgrade to 1.61 or later
# set org.bouncycastle:bcprov-ext-jdk16 to 1.61 in your pom.xml or build.gradle
org.bouncycastle:bcprov-jdk14 (Maven): upgrade to 1.61 or later
# set org.bouncycastle:bcprov-jdk14 to 1.61 in your pom.xml or build.gradle
org.bouncycastle:bcprov-jdk15 (Maven): upgrade to 1.61 or later
# set org.bouncycastle:bcprov-jdk15 to 1.61 in your pom.xml or build.gradle
org.bouncycastle:bcprov-jdk15on (Maven): upgrade to 1.61 or later
# set org.bouncycastle:bcprov-jdk15on to 1.61 in your pom.xml or build.gradle
org.bouncycastle:bcprov-jdk15to18 (Maven): upgrade to 1.61 or later
# set org.bouncycastle:bcprov-jdk15to18 to 1.61 in your pom.xml or build.gradle
org.bouncycastle:bcprov-jdk16 (Maven): upgrade to 1.61 or later
# set org.bouncycastle:bcprov-jdk16 to 1.61 in your pom.xml or build.gradle