diff --git a/perun-oidc-server-webapp/src/main/resources/logback.xml b/perun-oidc-server-webapp/src/main/resources/logback.xml
index 1e3ce72f09a0a1b4f050b7bf0da3ebf4de6c2ca6..aada621d62d4d62c7b25aff751f181aae1836f51 100644
--- a/perun-oidc-server-webapp/src/main/resources/logback.xml
+++ b/perun-oidc-server-webapp/src/main/resources/logback.xml
@@ -34,8 +34,16 @@
 		<suffixPattern>${PATTERN_SYSLOG}</suffixPattern>
 	</appender>
 
+	<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+		<encoder>
+			<pattern>${PATTERN}</pattern>
+			<charset>UTF-8</charset>
+		</encoder>
+	</appender>
+
 	<root level="${log.level}">
 		<appender-ref ref="${log.to}"/>
+		<appender-ref ref="CONSOLE"/>
 		<appender-ref ref="SENTRY"/>
 	</root>
 
diff --git a/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/PerunAdapterMethods.java b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/PerunAdapterMethods.java
index 0cdac9e78a308b0460fe916f472447202a8da4f4..d823ea00892f6c5a854052d00cf72dde6126e673 100644
--- a/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/PerunAdapterMethods.java
+++ b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/PerunAdapterMethods.java
@@ -341,4 +341,6 @@ public interface PerunAdapterMethods {
 
 	PerunUser getPerunUser(Long userId);
 
+	Set<Long> getUserVoIds(Long userId);
+
 }
diff --git a/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterImpl.java b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterImpl.java
index 489c124bb0951e2e8a0bbb55bce70cc636d2623d..33ecd0a2bbaf1de67da66ace9cae886c7b54668d 100644
--- a/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterImpl.java
+++ b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterImpl.java
@@ -414,4 +414,17 @@ public class PerunAdapterImpl extends PerunAdapter {
         }
     }
 
+    @Override
+    public Set<Long> getUserVoIds(Long userId) {
+        try {
+            return this.getAdapterPrimary().getUserVoIds(userId);
+        } catch (UnsupportedOperationException e) {
+            if (this.isCallFallback()) {
+                return this.getAdapterFallback().getUserVoIds(userId);
+            } else {
+                throw e;
+            }
+        }
+    }
+
 }
diff --git a/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterLdap.java b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterLdap.java
index 5216f099de5e8497f84a34dc5bfdb122606f848c..ba6b673e17f0f33c0968a48274f08568c260bc05 100644
--- a/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterLdap.java
+++ b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterLdap.java
@@ -531,6 +531,28 @@ public class PerunAdapterLdap extends PerunAdapterWithMappingServices implements
 		return getPerunUser(filter);
 	}
 
+	@Override
+	public Set<Long> getUserVoIds(Long userId) {
+		if (userId == null) {
+			throw new IllegalArgumentException("No userId");
+		}
+		SearchScope scope = SearchScope.ONELEVEL;
+		final String[] attributes = {PERUN_VO_ID};
+
+		String uniqueMember = getDnPrefixForUserId(userId) + ',' + this.connectorLdap.getBaseDN();
+		FilterBuilder filter = and(equal(UNIQUE_MEMBER, uniqueMember), equal(OBJECT_CLASS, PERUN_VO));
+		EntryMapper<Long> mapper = e -> {
+			if (!checkHasAttributes(e, attributes)) {
+				return null;
+			}
+
+			return Long.valueOf(e.get(PERUN_VO_ID).getString());
+		};
+
+		List<Long> voIds = connectorLdap.search(null, filter, scope, attributes, mapper);
+		return voIds.stream().filter(Objects::nonNull).collect(Collectors.toSet());
+	}
+
 	private PerunUser getPerunUser(FilterBuilder filter) {
 		SearchScope scope = SearchScope.ONELEVEL;
 		String[] attributes = new String[]{PERUN_USER_ID, GIVEN_NAME, SN};
diff --git a/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterRpc.java b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterRpc.java
index 4f50438203a56101db29c2c9f48f6ae8a6741493..68be610d78885e878a27c757aed4819c5b5f0777 100644
--- a/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterRpc.java
+++ b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/adapters/impl/PerunAdapterRpc.java
@@ -950,6 +950,23 @@ public class PerunAdapterRpc extends PerunAdapterWithMappingServices implements
 		return RpcMapper.mapPerunUser(response);
 	}
 
+	@Override
+	public Set<Long> getUserVoIds(Long userId) {
+		if (!this.connectorRpc.isEnabled()) {
+			return Collections.emptySet();
+		} else if (userId == null) {
+			throw new IllegalArgumentException("No userId");
+		}
+		List<Member> members = getMembersByUser(userId);
+		Set<Long> voIds = new HashSet<>();
+		for (Member member: members) {
+			if (VALID == member.getStatus()) {
+				voIds.add(member.getVoId());
+			}
+		}
+		return voIds;
+	}
+
 	private Member getMemberByUser(Long userId, Long voId) {
 		if (!this.connectorRpc.isEnabled()) {
 			return null;
diff --git a/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/claims/sources/VoBasedEdupersonScopedAffiliationsClaimSource.java b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/claims/sources/VoBasedEdupersonScopedAffiliationsClaimSource.java
new file mode 100644
index 0000000000000000000000000000000000000000..262e77d78aa84eb561b6e0e29344b2bf901635c4
--- /dev/null
+++ b/perun-oidc-server/src/main/java/cz/muni/ics/oidc/server/claims/sources/VoBasedEdupersonScopedAffiliationsClaimSource.java
@@ -0,0 +1,155 @@
+package cz.muni.ics.oidc.server.claims.sources;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.JsonNodeFactory;
+import com.fasterxml.jackson.dataformat.yaml.YAMLMapper;
+import cz.muni.ics.oidc.exceptions.ConfigurationException;
+import cz.muni.ics.oidc.server.claims.ClaimSource;
+import cz.muni.ics.oidc.server.claims.ClaimSourceInitContext;
+import cz.muni.ics.oidc.server.claims.ClaimSourceProduceContext;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.util.StringUtils;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * Claim source for generating affiliation values based on VO membership(s).
+ *
+ * Configuration (replace [claimName] with the name of the claim):
+ * <ul>
+ *     <li>
+ *         <b>custom.claim.[claimName].source.valueMap</b> - Mapping of voIds to affiliation values. Has to be specified
+ *         in a format 'voId:aff,aff|voId:aff,aff', where 'voId' is an ID of the VO and 'aff' is the value of an
+ *         affiliation to be added to the output if the user is a valid member of the respective VO with the specified
+ *         identifier.
+ *     </li>
+ * </ul>
+ *
+ * @author Dominik Frantisek Bucik <bucik@ics.muni.cz>
+ */
+@Slf4j
+public class VoBasedEdupersonScopedAffiliationsClaimSource extends ClaimSource {
+
+	private final Pattern epsaPattern = Pattern.compile(
+			"(member|student|faculty|staff|alum|affiliate|unknown|library-walk-in)@.+"
+	);
+
+	private static final String KEY_VALUE_MAP = "valueMap";
+
+	private final Map<Long, Set<String>> voIdValuesMap = new HashMap<>();
+
+	public VoBasedEdupersonScopedAffiliationsClaimSource(ClaimSourceInitContext ctx) {
+		super(ctx);
+		String valueMapProp = ctx.getProperty(KEY_VALUE_MAP, null);
+		if (!StringUtils.hasText(valueMapProp)) {
+			throw new ConfigurationException("Invalid configuration for claim " + getClaimName() + ": valueMap must be provided");
+		}
+		voIdValuesMap.putAll(parseValueMap(valueMapProp));
+		log.debug("{} - voIdAffiliationsMap: '{}'", getClaimName(), voIdValuesMap);
+	}
+
+	@Override
+	public Set<String> getAttrIdentifiers() {
+		return Collections.emptySet();
+	}
+
+	@Override
+	public JsonNode produceValue(ClaimSourceProduceContext pctx) {
+		Long userId = pctx.getPerunUserId();
+		Set<String> userAffiliations = new HashSet<>();
+		Set<Long> userVoIds = pctx.getPerunAdapter().getUserVoIds(userId);
+		for (Long userVoId: userVoIds) {
+			Set<String> affiliationsToBeAdded = voIdValuesMap.getOrDefault(userVoId, new HashSet<>());
+			if (!affiliationsToBeAdded.isEmpty()) {
+				log.trace("{} - added affiliations '{}' due to membership in vo '{}'",
+						getClaimName(), affiliationsToBeAdded, userVoId);
+				userAffiliations.addAll(affiliationsToBeAdded);
+			}
+		}
+		ArrayNode result = JsonNodeFactory.instance.arrayNode();
+		for (String affiliation : userAffiliations) {
+			result.add(affiliation);
+		}
+
+		log.debug("{} - produced value for user({}): '{}'", getClaimName(), userId, result);
+		return result;
+	}
+
+	private Map<Long, Set<String>> parseValueMap(String valueMapProp) {
+		String[] valueMapParts = valueMapProp.split("\\|");
+		if (valueMapParts.length == 0) {
+			throw getConfigurationException(
+					"Could not parse valueMap property. Needs to be in format voId1:aff1,aff2|voId2:aff3"
+			);
+		}
+		for (String idValue: valueMapParts) {
+			if (!StringUtils.hasText(idValue)) {
+				throw getConfigurationException(
+						"Could not parse id and affiliations mapping, empty String encountered"
+				);
+			}
+			String[] idValueParts = idValue.split(":");
+			if (idValueParts.length != 2) {
+				throw getConfigurationException(
+						"Could not parse id and affiliations mapping. Needs to be in format voId:aff1,aff2"
+				);
+			}
+			long voId;
+			try {
+				voId = Long.parseLong(idValueParts[0]);
+			} catch (NumberFormatException ex) {
+				throw getConfigurationException("Could not parse VO id out of subcomponent "  + idValue, ex);
+			}
+			Set<String> voAffiliations = parseAffiliations(idValueParts[1]);
+			if (voAffiliations.isEmpty()) {
+				throw getConfigurationException("No affiliation values found for voId " + voId);
+			}
+			voIdValuesMap.put(voId, voAffiliations);
+		}
+		return voIdValuesMap;
+	}
+
+	private Set<String> parseAffiliations(String idValuePart) {
+		String[] affiliations = idValuePart.split(",");
+		Set<String> resolvedAffiliations = new HashSet<>();
+		for (String affiliation : affiliations) {
+			if (!epsaPattern.matcher(affiliation).matches()) {
+				throw getConfigurationException(
+						"Value '" + affiliation + "' is not a valid eduPersonScopedAffiliation value"
+				);
+			}
+			resolvedAffiliations.add(affiliation);
+		}
+		return resolvedAffiliations;
+	}
+
+	private ConfigurationException getConfigurationException(String message) {
+		return getConfigurationException(message, null);
+	}
+
+	private ConfigurationException getConfigurationException(String message, Throwable cause) {
+		StringBuilder fullMessage = new StringBuilder();
+		fullMessage.append("Invalid configuration for claim ").append(getClaimName());
+		if (StringUtils.hasText(message)) {
+			fullMessage.append(": ").append(message);
+		}
+
+		if (cause != null) {
+			throw new ConfigurationException(fullMessage.toString(), cause);
+		} else {
+			throw new ConfigurationException(fullMessage.toString());
+		}
+	}
+
+}